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Hemmi "Sun" Type 98 Maneuvering Slide Rule c1938
ISRM 14.09.25.01.X
Japanese Battleship YAMATO
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Hemmi "Sun" Type 98 Maneuvering Slide Rule
Made in Japan by "SUN"
Background: "Type 98" denotes that it was created in AD1938 (Koki or Jimmu Era 2598), which is 1938 in western calendars.
The type 98 Movement rule, is a polar coordinate measuring system and was designed to calculate tracking and range data between two moving ships (or objects) to, possibly, provide input to the Type 98 Hoiban and Shagekiban Low Angle Fire Control computer which was specially designed for the Yamato class of battleships (the Yamato and Murushi). It could also have been used as the primary calculator for the smaller guns that were not connected the the electromechanical computers on the main battery of guns. This slide rule could also have been used for Ship-to-Shore or Shore-to-Ship bombardement as well. Another feature of this slide rule is that the Maneuvering Board, with its rotating dial on the slide, can be used to determine course corrections and wind drift. Handy if the battleship Yamato or an aircraft carrier, is to launch an aircraft, it will calculate the best heading into the wind. Submarines, would also use a similar device to calculate intercept vectors. The design of this slide rule mimics the maneuvering board/tables of the Allies, designed in 1920, and is still in use today. The center of the dial is 'My' or 'Own' ship.
Scales and markings translated by Jiro Higuchi
Front Scale: Relative Coarse Angle // Speed of My Ship [ Speed of Standard Ship, Distance (Logarithmic Scale) nautical mile/Meters, ] Velocity \\ Velocity Ratio
Back Slide: Time Board, Distance by reading Hour/Nautical Mile or Minutes/Meters
Well: Velocity Ratio =>1, Angle of course alteration, Velocity Ratio =<1
Case: Naugahyde with military division "Air Armament 9/90"
Gift of Phillip Rodley, Upper Hutt, New Zealand
On Left: Another of these slide rules was discovered in a bunker, located under a mountain behind the old Taura pyrotechnic factory, which manufactered torpedos during WWII, and stored them within. The buildings are currently part of the Maritime Self-Defense Force Yokosuka Zosamu depot and Akebono Machinery Co., Ltd. The bunker with its network of tunnels is not open to the public. See Yakumo's blog (in Japanese). Google will do a decent translation.
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Sun Hemmi Model 1 (British Export Version)
ISRM 13.04.26.05 |
Sun (Hemmi) Model 1 (British Export version)
Made in Japan - pre1919, cursor.
Slide stamped: C.Baker, 244 High Holborn, London
Front Scale: 10 in // A [ B, C ] D || 28cm
Back Scale: [ S, L, T ]
Well: blank
Back: Equivalents in English
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Sun Hemmi Model 1 (French Export Version)
ISRM 13.04.26.05 |
Sun (Hemmi) Model 1 (French Export version)
Made in Japan - c1928, cursor
Front Scale:
10 in // A [ B, C ] D || 28cm
Back Scale:
[ S, L, T ]
Well: blank
Back: Equivalents in French
Gift of Phillip Rodley, Upper Hutt, New Zealand
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J.Hemmi "Sun" Model 1 (Export Version)
REF |
J.Hemmi "Sun" Model 1 (Export version)
Made in Japan - Pre 1927, has a post 1970 cursor
Front Scale:
10 in // A [ B, C ] D || 28cm
Back Scale:
[ S, L, T ]
Well: 30-55cm
Archive - Scan donated by Olivier (France)
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Sun Hemmi Model 1 (Export Version)
REF |
Sun Hemmi Model 1 (Export version)
Made in Japan - c1930
Front Scale:
10 in // A [ B, C ] D || 28cm
Back Scale:
[ S, L, T ]
Well: 30-55cm
Archive - Scan donated by Olivier (France)
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Sun Hemmi Model 1 (UK Export Version)
ISRM 23.07.14.02 |
Sun (Hemmi) Model 1 (UK Export version)
Made in Japan - c1928, Type A "C" cursor
Front Scale:
10 in // A [ B, C ] D || 28cm
Back Scale:
[ S, L, T ]
Well: blank
Back: Equivalents in English
Gift of Paul Ross, Missouri
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J.Hemmi "Sun" Model 3 Electro c1919-1929
ISRM 12.03.15.02 |
J.Hemmi "Sun" Model 3 Electro c1919-1929
Made in Japan - Pre 1927, Japanese Patent No. 22129 (copy of AW Faber 387)
Patents: No221129
Note: Railroad track style divisions. Thin aluminum framed cursor.
Front Scale:
27cm // LL2, A(KW) [ B(HP), C ] D, LL03 || 10 in
Back Scale:
[ S, L, T ]
Well: Dynamo(Motor), Volt
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J.Hemmi "Sun" Model 3 Electro c1919-1929
REF
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J.Hemmi "Sun" Model 3 Electro c1919-1929
Made in Japan - Pre 1927, Japanese Patent No. 22129 (copy of AW Faber 387)
Patents: No22129, No29714
Note: Railroad track style divisions. "C" cursor.
Front Scale:
27cm // LL2, A(KW) [ B(HP), C ] D, LL03 || 10 in
Back Scale:
[ S, L, T ]
Well: Dynamo(Motor), Volt
Original owner C.W. Sewell. ( b? - c1978) Engine and gearbox/transmission designer for Bentley and Lagonda before and after WWII.
Archive - Photo provided by Scott Pattinson, grandson of owner.
Scott Pattinson writes; "CW Sewell was my maternal grandfather. He worked at Lagonda / Bentley motors. He was Bentley's chief designer, although W O Bentley claimed to hold that position, Bentley trained as a locomotive engineer and gave broad brush strokes to his team in reality. C.W. Sewell was also known as Rex Sewell. C.W. Sewell was part of the team that brought their cars to the Le Mans 24 hour race - one of the "Bentley Boys". During WW2 he worked for the government designing military vehicles, notably a jeep type amphibious vehicle that could be dropped by parachute and had some land mine resilience.
He has also been referred to as the gearbox (transmission for US folks) wizard at Bentley.
In a weird twist to my heritage, my paternal grandfather's company built the Brooklands race track on which Bentley cars and others competed. There was criticism of the track to be poor quality, however despite what you may read about that, it was built to the spec asked for and laying asphalt on banked surfaces was not a thing back then.
CW Sewell died of prostate cancer when I was about 14 so about 1978. Tough for me, there are so many things I wished to have talked to him about."
Proof of provenance: The Bentley vs Bentley case which states: "The 21/2-litre Lagonda was designed by C W Sewell, with S Ivernee, who were part of W O Bentley's team."
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J.Hemmi "Sun" Model 6 150mm Pocket (1914-1929)
ISRM 13.12.21.01 |
J.Hemmi "Sun" Model 6 150mm Pocket (1914-1929)
Made in Japan by Sun Hemmi, cursor
Front Scale:
5 in // A [ B, C ] D || 15cm
Back Scale:
[ S, L, T ]
Well: blank
Back: Equivalents in English
Note: Acquired out of the UK
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Sun Hemmi "Byoutou" 苗頭 (Gunnery) 1944
ISRM 10.09.13.01
The following information is from Atsushi Tomozawa: The name "Byou-tou" comes from two Chinese characters "byou" 苗 and "tou" 頭 on a box containing a specimen of this rule in the Hemmi Offices in Tokyo. The first character translates to sprout, bud or shoot of a young plant; the second means "head." "Shooting Heading" is not an impossible translation. "Development History of the Slide Rule" by Jihei Miyazaki states that the Byoutou rule was introduced in 1944 but does not mention what function the rule served. Another book, "History of the Slide Rule," written for the Royal Navy Military Schools in 1944 explains how to use the rule to calculate a correction angle for firing at moving ships; the corrected angle is called "corrected byoutou" or deflection Gunnery
Notes from the curator, who used to work for Dr. Chen in 1985: "I asked Dr. Di Chen, a renowned Physicist in Lasers and Optics, to comment (on right) on this slide rule that he owned since he was in college. He stated he used it for electrical engineering classes, which conflicts with the speculations described on the left column. The back label instructions reference scales C, D and CI, but the scales on this rules are numbered sequentially 1 through 18. Dr. Chen did sctratch in scales labels on the slide over 60 years agao: (16)='D', (17)='K', (18)='A' and on the stock, (8)='B". The left index of A/B or (18)/(8) starts at 0.5 rather than 1. A very puzzling arrangement." Mike.
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Sun Hemmi "Byoutou" 苗頭 (Gunnery) 1944
Made in Japan - 20 scales - used in electrical engineering classes in Taiwan.
Note: 250 x 34 x 11 mm. (Same body as Hemmi 50W.)
Front Scale:
V, 10cm // 1, 12, 2, 11 [ 3, 12, 4, 15, 5, 14, 6, 13 ] 7, 8 || 9, 10
Back Slide (Reversible): [ 16, 17, 18 ]
Back: There is a plastic table on the back with settings for the C and D scales and trigonometry formulas; none of which seems to relate to this slide rule.
Cursor (Reversible): to align hairlines to the top and bottom edge scales.
Owned and donated by Dr. Di Chen, Mound, Minnisota
Dr. Di Chen bought this slide rule in 1950 while in his second year at the
EE department of the National Taiwan University in Taipei, Taiwan.
Dr. Di Chen has over 45 years of optical data storage experience. He received his Ph.D.
in Electrical Engineering at Stanford University, and taught and did research at the
University of Minnesota. He joined the Honeywell Research Center where he did pioneering
research in magneto-optic recording and laser beam control. He and Nelson Yew founded Optotech Inc. in 1984,
and introduced the world's first high density WORM drive and media to the market. He
has published over 100 papers, presentations, and reports on optical data storage. Di
is currently the President of Chen and Associates, a consulting company in the field of
optical data storage.
Di Chen writes: "I bought this slide rule at a stationary store in Taiwan which was frequented by college students. So it is not likely that this slide rule is aimed for military purposes. On the other hand, there are some military schools in Taipei so I really cannot rule out that this product may be useful for them.
"The most common use of this slide rule is for mulitiplication and division, as well as some trigonometric functions. I don't recall using any other functions such as scale v. As I vaguely recall, reversing the sliding center bar expands the scale, and the bottom edge is probably related to angles for trigonometric funtions.
"As the main scale for the basic functions are simply logarithmatic, other scales may be log log, for calculation of powers. I also recall that the cursor must be reversed for some functions, but I do not remember which ones.
It have been over sixty years ago since I last touch this instrument, so I really cannot be sure of the operations and functions that it provided. Sorry that I cannot be of more help."
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Sun Hemmi No.22
ISRM 18.05.01.01 |
Sun Hemmi No.22 date code EJ (1954)
Made in Japan - Oct 1954
Note: a single stator and matching bamboo slide in a metal frame. 9 inches total length.
Front Scale:
[ CI, C ] D, A
Gift of Giuseppe Bianchi of Italy
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Sun Hemmi No.P23 8inch Plastic Slide Rule
ISRM 14.01.03.07 |
Sun Hemmi No.P23 8inch Plastic Slide Rule
Made in Japan - Reg507296
Front Scale:
A [ B, CI, C ] D
Note: Left Brace was missing and original owner glued a fabricated part to hold it together.
Gift Of Phillip Rodley of Upper Hutt, New Zealand
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Sun Hemmi No.P23 8inch Plastic Slide Rule (Version 2)
ISRM 14.01.03.07 |
Sun Hemmi No.P23 8inch Plastic Slide Rule (Version 2)
Made in Japan - Reg507296
Note: Math symbols on lens
Front Scale:
A [ B, CI, C ] D
Original Owner: Janice Lingle (Marked on sleeve).
Gift Of James Pennell Collection
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Hemmi-Westinghouse 4 inch
P192 |
Hemmi-Westinghouse 4 inch
Made in Japan by Sun Hemmi for Westinghouse (U.S.)
Front Scale:
4in || A [ B, CI, D || 10cm
Back Scale:
[ S, L, T ]
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Hemmi 30 w/ Magnifier 10cm
P223 |
Hemmi 30 w/ Magnifier
Made in Occupied Japan - Note: A and B scale missing π symbol at 3.14
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
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Hemmi 30R w/ Magnifier 4in MIOJ
20.02.09.02 |
Hemmi 30R w/ Magnifier
Made in Occupied Japan - Note: A and B scale missing π symbol at 3.14
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
Gift of Barry J. Altman of Plymouth, Minnessota.
Belonged to Barry's uncle Robert N. Altman who worked with Square D and later with FMC's military division.
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Hemmi 30 10cm
REF P254 |
Hemmi 30
Made in Japan - Note: A and B scale missing π symbol at 3.14
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
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Hemmi 30 10cm (1964)
ISRM 22.07.06.75 |
Hemmi 30 10cm scale dcOA 1964
Made in Japan
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
Gift of Cindy Tate, Bozeman, Montana. Victor B. Tate collection.
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Hemmi 30 w/ Magnifier 10cm
REF P143 |
Hemmi 30 w/ Magnifier
Made in Japan
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
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Hemmi 30 SKF 10cm (1962)
REF P139 |
Hemmi 30 SKF
Made in Japan - Date Code MD (Apr, 1962)- Metal Cursor
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
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Hemmi 30 10cm (1966)
ISRM 18.07.16.03
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Hemmi 30 10cm
Made in Japan - Date Code QL (Dec, 1966)- Plastic Cursor
Front Scale:
10cm // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
Back: Hitachi Promo
Owned by Arnold D. Strausman, gifted by his daughter Judith B. King of Miami Shoes, Florida.
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Arnold Davidson Straussman (c1908-1983) was an electrical engineer who loved the elegance of math, as well as science and the arts. After graduating from Pratt Institute, NY in 1929, he was employed by the Jersey Central Power and Light Company until 1940. The majority of his career was spent with Ebasco Services headquartered in NY. Ebasco assigned him to a number of domestic and overseas projects. He won numerous awards in Ebasco's Photography Club competitions.
His daughter, Judith King write: "He was an amazing man, and introduced me to astronomy and Scientific American as soon as I could read. He loved math in its pure forms, but also the practicalities of what you could design and build with it. We designed and built a simple radio together before I was out of grade school. " Note: He is listed in Amatuer Radio Stations of the United States June 30, 1920: Call sign: 2AUH (18 watts), located at 601 Asbury Ave, Asbury Park, NJ. Evidently Arnold was building radios while still in high school. This was before W and K prefixes were to call signs in the USA.
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Hemmi 32 w/ Magnifier 4inch
P141 |
Hemmi 32 w/ Magnifier
Made in Occupied Japan
Front Scale:
4in // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
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Hemmi 32 w/ Magnifier 4inch (1952)
ISRM 22.03.01.81 |
Hemmi 32 w/ Magnifier
Made in Japan - dcCI (September, 1952)
Front Scale:
4in // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
Gift of Philip E. Stanley Collection
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Hemmi P33S Mannheim (1970)
ISRM 24.07.04.64 |
Hemmi P33S Mannheim
Made in Japan - dcOD (April, 1970)
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
Gift of Tom Dilatush Collection
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Hemmi 34 RK
P177 |
Hemmi 34 RK
Made in Japan - Early Cursor
Front Scale:
14cm // A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
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Hemmi 34 RK (1955)
ISRM 22.03.01.80 |
Hemmi 34 RK dcFI (Sep. 1955)
Made in Japan - Metal Framed cursor
Front Scale:
5in // A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
Gift of Philip E. Stanley Collection
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Hemmi 34RK (rebranded as Post 1444K ) MIOJ 1945-1952
ISRM 14.01.10.03
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Hemmi 34RK (rebranded as Post 1444K ) MIOJ
Made in Occupied Japan - "Made In Occupied Japan" (MIOJ) is a term used for the time period from 1945 (after World War II) through April 25, 1952; it was during this time that the Allies "occupied" Japan.
Front Scale:
5 inch // A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
Advertisement (on sleeve): Keyes Tank company, Provo, Utah.
Gift Of Bill Wehrend Collection, Palo Alto, California.
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Hemmi 34 RK
P136 |
Hemmi 34 RK
Made in Japan - Late model Cursor
Front Scale:
14cm // A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
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Hemmi 35 w/ Magnifier 4in/10cm "Sun" cutout
22.05.05.50 |
Hemmi 35 w/ Magnifier 4in/10cm "Sun" cutout
Note: Previously, slide rule was a model 16. Ref: Paul Ross
Front Scale: 4in || A [ B, C ] D || 10cm
Back Scale: [ S, L, T ]
Gift of Dan Robertson of Vancouver, WA that belonged to his friend Jon F. Monsen Ph.D., P.E.
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Hemmi 35ML w/ Magnifier 4in/10cm
22.07.06.74 |
Hemmi 35ML w/ Magnifier 4in/10cm
Note: Previously, slide rule was a model 16. Ref: Paul Ross
Front Scale:
4in || A [ B, C ] D || 10cm
Back Scale:
[ S, L, T ]
Gift of Cindy Tate, Bozeman, Montana
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Hemmi P36 Metric Converter (Japanese)
REF |
Hemmi P36 Metric Converter (Japanese Language)
Made in Japan - All plastic
Archive - eBay photo
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Sun Hemmi P37 Commerce "Sales" logo
ISRM 22.03.01.66 |
Sun Hemmi P37 Commerce "Sales" logo
Made in Japan - Plastic Japanese Kanji language fonts
Front Scale:
(1)%, (2)%, D [ C, CI, 180 Days ] Months 1-6, Months 7-12
Back Scale: [ 4 scales ] (Reverse slide to use)
Promo: Sales.
Gift Of Philip E. Stanley collection
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Hemmi 40 Occupied Japan
S261 |
Sun Hemmi 40 Occupied Japan
Made in Occupied Japan - Bamboo
Front Scale:
A [ B, C ] D
Back Scale: [S, L, T]
Back: Conversions
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Hemmi 40RK (1969) Bamboo
ISRM 15.05.09.07 |
Hemmi 40RK dc T.A. Jan. 1969
Made in Japan - Bamboo stock and slide
Front Scale:
A [ B, CI, C ] D
Back Scale: [S, L, T]
Gift of Dick Rose
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Hemmi P40RK (1969) Plastic
ISRM 15.05.09.06 |
Hemmi P40RK dc T.H. dc T.H. Aug. 1969
Made in Japan - Plastic Duplex styling
Front Scale:
A [ B, CI, C ] D
Back Scale: [S, L, T]
Gift of Dick Rose
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Sun Hemmi 45K 8"
S060 |
Sun Hemmi 45K 8"
Made in Japan - Bamboo
Front Scale:
K, DF [ CF, CI, C ] D, A
Back Scale: [TI, L, SI]
Back: Conversions
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Sun Hemmi Model 47
ISRM 12.11.22.03 |
Sun Hemmi Model 47
Made in Japan - 1936 - WWII
Front Scale (with Quot., Prod. Decimal tracking aids)
27cm // A [ B, C ] D || 10in
Back Scale (S keyed to A, B):
[ S, L, T ]
Note: Same as Hemmi model 1, Hemmi changed their numbering system about 1927
Donated from the collection of Robert L. Allison of Ballard, Washington.
 Cardboard case
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Sun Hemmi Model 47 (Export Version)
REF |
Sun Hemmi Model 47 (Export version)
Made in Japan - c1930
Front Scale:
10 in // [ CI, C ] D, A || 29cm
Back Scale:
[ S, L, T ]
Well: 30-55cm
Note: Same as Hemmi model 1, Hemmi changed their numbering system about 1927
Archive - Scan donated by Olivier (France)
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Sun Hemmi No. 50/1 Advanced Mannheim 1928
ISRM 22.07.06.83 |
Sun Hemmi No. 50/1 Advanced Mannheim 1928
Made in Japan by sun Hemmi
Front Scale:
10in // A [ B, CI, C ] D, K || 28cm
Back Scale:
[ S, L, T ]
Well: 30-55cm
Gift ofCindy Tate of Bozeman, Montana. Victor B. Tate collection.
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Sun Hemmi No. 50W Mannheim Variant 1 (1959)
ISRM 14.01.10.28 |
Sun Hemmi No. 50W Mannheim Variant 1
Made in Japan date code JD (April, 1959)
Front Scale:
27cm // A [ B, CI, C ] D, K || 10in
Back Scale:
[ S, L, T ]
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Sun Hemmi No. 50W Mannheim Variant 2 (1960)
ISRM 13.08.12.06 |
Sun Hemmi No. 50W Mannheim Variant 2
Made in Japan date code KC.N (March, 1960)
Front Scale:
10in // A [ B, CI, C ] D, K || 27cm
Back Scale:
[ S, L, T ]
Original Owner: K,S.Richmond,
Gift Of Phillip Rodley, Upper Hutt, New Zealand.
 Inst (21.7MB PDF)
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Sun Hemmi No. 50W Mannheim Variant 3 (1960)
ISRM 14.01.10.29 |
Sun Hemmi No. 50W Mannheim Variant 3
Made in Japan date code KK (Nov, 1960)
Front Scale:
27cm // A [ B, CI, C ] D, K || 13-0-13cm
Back Scale:
[ S, L, T ]
Gift Of Phillip Rodley, Upper Hutt, New Zealand.
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Sun Hemmi 64 with early "C" Cursor
ISRM 21.03.29.01 |
Sun Hemmi 64 with early "C" Cursor
Made in Japan - Bamboo Rail Road Track scales early "C" cursor.
Front Scale (extended):
27cm // K, A [ B, CI, C ] D, L || 10inch
Back Scale::
[ S, S&T, T ]
Back: Conversions, gauge marks (English).
Multiple Hairlines.
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Sun Hemmi 64 Occupied Japan (Modern Cursor)
ISRM 13.11.05.03 |
Sun Hemmi 64 Occupied Japan (Modern Cursor)
Made in Occupied Japan - Bamboo
Front Scale (extended)
27cm // K, A [ B, CI, C ] D, L || 10inch
Back: Conversions, gauge marks. (too faded to read)
Multiple Hairlines.
Gift Of Phillip Rodley and Lew Solomon of New Zealand.
Cardboard case with logo and price tag ¥1250 Yen
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Sun Hemmi 64 System Rietz (1958)
ISRM 13.11.05.03 |
Sun Hemmi 64 System Rietz dcIG (July 1958)
Made in Japan - Bamboo
Front Scale (extended)
27cm // K, A [ B, CI, C ] D, L || 13cm-0-13cm
Back: Conversions, gauge marks.(English)
Multiple Hairlines.
Gift Of Ted Hume, San Angelo, Texas.
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Sun Hemmi 64T |
Sun Hemmi 64T
Made in Japan - Bamboo. Note additional scales from other Hemmi 64s
Front Scale (extended)
27cm // K, A [ B, BI, CI, C ] D, DI, , L || 10inch
Back Scale: [T2 Cot2, , T1 Cot1, , S&T, S Cos, ]
Back: Conversions, gauge marks
Multiple Hairlines.
Archive - Herman van Herwijnen's SRC 24401
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Sun Hemmi 65
ISRM 17.05.02.31 |
Sun Hemmi 65 (c1932-1968)
Note: Also shown in Hemmi gallery
Made in Japan - for Lutz, Ferrando Y Cia, S.A., Buenos Aires.
Note:Bamboo. Note Nestler Eqivalents Label And a Ricoh Cursor
Front Scale (extended)
27cm // K, A [ B, BI, CI, C ] D, L || 10inch
Back Scale: [ S, S&T, T ]
Back: Back: Nestler Equivalents slip in Portugese
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Sun Hemmi 66 Rietz "C" cursor (c1932)
ISRM 22.03.01.64 |
Sun Hemmi 66 Rietz "C" cursor (c1932)
Made in Japan - Bamboo - No Date Codes
Front Scale (extended)
15cm // K, A [ B, CI, C ] D, L || 6in (finely divided)
Back Scale: [S, S&T, T]
Back: Missing Conversions insert
Multiple 3-Hairlines lens.
Promo: SKF ball bearings logo on sleeve.
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Sun Hemmi 66 Rietz
REF |
Sun Hemmi 66 Rietz
Made in Japan - Bamboo - Date Codes: LG HD
Front Scale (extended)
15cm // K, A [ B, CI, C ] D, L || 8cm-0-8cm
Back Scale: [S, S&T, T]
Back: Conversions, gauge marks
Multiple Hairlines.
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Scan donated by the Owner, Dr. H. John Krijnen, (1946- ) Netherlands, a retired Anesthesiologist and pain specialist who studied at Leiden University. He
bought and used slide rules like this one in his practice to calculate dosages of various drugs. He has published two books on the Great War and maintains an interest in slide rules, photography, markmanship and painting.
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Sun Hemmi 74 System Rietz - Kanthal Promotional (1959)
ISRM 24.07.04.62 |
Sun Hemmi 74 System Rietz - Kanthal Promotional dcJA Jan 1959
Made in Japan - Bamboo . No scale labels. Metal framed cursor
Front Scale (extended)
14cm // K, A [ B, CI, C ] D, L
Back Scales: [ S, S&T, T ]
Three Hairlines.
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Sun Hemmi 74 System Rietz - Kanthal Promotional (1971)
ISRM 24.07.04.63 |
Sun Hemmi 74 System Rietz - Kanthal Promotional dcVE May 1971
Made in Japan - Bamboo . No scale labels. Plastic cursor.
Front Scale (extended)
14cm // K, A [ B, CI, C ] D, L
Back Scales: [ S, S&T, T ]
Three Hairlines.
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Sun Hemmi 80/1 Electro
S410 |
Sun Hemmi 80/1 Electro
Made in Japan - Bamboo
Front Scale (extended)
27cm // K, A [ B, CI, C ] D, L || 10inch
Back Scale: Conversions, gauge marks
Well Scale: Dynamo/Motor (Efficiency), Volt (Drop)
Note: the aluminum knife edge on the slide and the backing have
been corroded away. This was found in Beijing, China.
Archive - No longer in collection
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Sun Hemmi 80/3 Electro
REF |
Sun Hemmi 80/1 Electro
Made in Japan - Bamboo
Front Scale (extended)
27cm // K, A [ B, CI, C ] D, L || 10inch
Back Scale: [ S, L, T ]
Back : Label Missing
Well Scale: Dynamo/Motor (Efficiency), Volt (Drop)
Scan provided by Olivier Cassou Collection, France
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Sun Hemmi No. 80K Electro with Dual Cursors
ISRM 13.04.26.04 |
Sun Hemmi No. 80K Electro with Dual Cursors
Made in Japan - Bamboo date code FL (Dec 1955)
Front Scale (extended)
10inch // Dynamo/Motor, Volt, Amp/KW (A) [ PS (B), CI, C ] D, LL2, LL3 || K
Back Scale: [ S, L, T
Back: Conversions, gauge marks
Well: Blank
Note: The left cursor is used for metric HP horsepower, the right cursor used for British/US HP
Gift of Phillip Rodley, Upper Hutt, New Zealand
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J.Hemmi "Sun" Model 81 Electro with Decimal Keeper
ISRM 12.06.23.02
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J.Hemmi "Sun" Model 81 Electro with Decimal Keeper
Made in Japan -
Stock Patents:Patent 22129 (1912), British patent 107562 (1917), Brevete S.G.D.G.
Cursor Patent 58115 (1912). Cursor marked "Hemmi" so was installed 1928 or later. This was Hemmi's top-of-the-line cursor and was available from 1925 to WWII
Note: This is signed by "J.Hemmi". After 1928, the slide rules were just signed "Hemmi"
Front Scale: 27cm // LL2, A(KW) [ B(HP), CI, C ] D, LL03 || 10 in
Back Scale: [ S, L, T ]
Well: Dynamo(Motor), Volt
Gift of Jiro Higuchi, Kamakura, Japan
This slide rule was owned by Jiro's father who was an electrical engineer. "Jiro" means "second son" in Japanese. Jiro worked in a career at Daicel Chemical Industries, Ltd As a vice-president, he worked with many American companies that were developing writable optical disk media.
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J.Hemmi "Sun" Model 82 (1932-1937)
ISRM 21.11.24.01
Note: This is signed by "J.Hemmi". After 1928, the slide rules were just signed "Hemmi"
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J.Hemmi "Sun" Model 82 150mm Pocket (1914-1929)
Made in Japan by J. Hemmi, Railroad Track scales, metal framed cursor
On lower edge of stock: Patent No. 22129 (1912). British Patent 107562 (1917),. Brevete S.G.D.G. Made in Japan.
Front Scale:
5 in // A [ B, C ] D || 15cm
Back Scale:
[ S, L, T ]
Well: 16cm - 30cm
Back: Equivalents in English
Gift Of Graham L. Jones of Cambridge, UK
Graham L. Jones studied agricultural sciences and economics at university, followed by 2 years of compulsory National Service in the Army. He was fortunate to be commisioned and after 2 years he transferred to the Army Reserve and served as a troop commander in a volunterr BD Regiment in the Royal Engineers. His career spanned 34 years with the Agricul;tural Development and Advisory Service. Toward the end of his career he was appointed to the British Embassies in Denmark and Norway as First Secretary Agriculture and Fisheries for 4 years. He retired in 1983
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Sun Hemmi No. 130 System Darmstadt
ISRM 13.08.12.04 |
Sun Hemmi No. 130 System Darmstadt
Made in Japan - Bamboo, Simplex design
Note 'Railroad Track' style divisions
Front Scale (extended)
27cm // K, A [ B, BI, CI, C ] D, DI, , L || 10inch
Back Scale: [T2 Cot2, , T1 Cot1, , S&T, S Cos, ]
Back: Conversions, gauge marks
Multiple Hairlines.
Gift of Phillip Rodley, Upper Hutt, New Zealand
 Cardboard Case
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Hemmi 130W Advanced Darmstadt (c1970)
REF |
Hemmi 130W Advanced Darmstadt
Made in Japan by Hemmi.
Front Scale:
10in // T Cot, K, A [ B, BI, CI, C ] D, P, S Cos || 27cm
Back Scale:
[ L, LL0, LL1, LL2, LL3 ]
Back: Equivalents
Scan provided by Olivier Cassou Collection, France
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Hemmi No 135 Pocket Darmstadt (1959-1971)
REF |
Hemmi 135 Pocket Darmstadt
Made in Japan by Hemmi.
Front Scale (extended)
T Cot, K, A [ B, CI, C ] D, P, S Cos
Back Scale:
[ L, LL1, LL2, LL3 ]
Back: Equivalents
Scan provided by Olivier Cassou Collection, France
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Hemmi No 136 Pocket System Darmstadt (1959)
ISRM 22.03.01.12 |
Hemmi 136 Pocket System Darmstadt dcJFA (June_1959)
Made in Japan by Hemmi.
Front Scale (extended)
15cm // T, K, A [ B, CI, C ] Sin(D), Cos || Cos Cot , Tg Cot
Back Scale:
[ LL1, LL2, LL3 ]
Back: Equivalents(English)
Gift Of Philip E. Stanley Collection
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Hemmi 143 Commerce
REF |
Hemmi 143 Commerce
Made in Japan by Hemmi.
Front Scale:
A, N [ M, £, s/d, C ] D, G (Conversions)
Back Scale:
P1 %, P2 %, DF [ CF, CIF, CI, C ] D, LL, %
Archive - Herman van Herwijnen's SRC 56771
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Hemmi 149 Pocket Duplex Log Log (1961)
ISRM 22.03.01.65 |
Hemmi 149 Pocket Duplex Log Log dcLH Aug. 1961
Made in Japan by Hemmi.
Front Scale:
L, K, A [ B, TI Cot, SI Cos, C ] D, LL0, LL/0
Back Scale:
LL/1, LL/2, LL/3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Gift Of Philip E. Stanley
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Hemmi 149A
REF |
Hemmi 149A
Made in Japan by Hemmi.
Front Scale:
L, K, A [ B, TI Cot, SI Cos, C ] D, LL0, LL/0
Back Scale:
LL/1, LL/2, LL/3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Archive - Herman van Herwijnen's SRC 24661
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Sun Hemmi 153 (early)
ISRM 12.04.23.02 |
Sun Hemmi 153 (early) - For Electrical Engineer
Made in Japan - No Date code
Note: Scale labels use Times Romans font.
Front Scale:
L, K, A [ B, CI, C ] D, T, Gθ
Back Scale:
θ, Rθ, P(sin) [ Q(cos), Q', C ] LL3, LL2, LL1
Donated By Jim Jeffery, California
Note: This is pre WW-II version as there is no model number on the stock and the label
fonts are different than later versions (look at the 'I' in CI on the other Hemmi 153's).
Also the Q' scale on this model is red, the others are black.
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Sun Hemmi 153 (Pre WWII)
ISRM 14.10.09.05 |
Sun Hemmi 153 (Pre WWII) - For Electrical Engineer
Made in Japan - No Date code. Note logo on cursor, pre-"Occupied Japan"
Front Scale:
L, K, A [ B, CI, C ] D, T, Gθ
Back Scale:
θ, Rθ, P(sin) [ Q(cos), Q', C ] LL3, LL2, LL1
Gift Of Edward Wright, Odenton, Maryland.
Hemmi 153 and Special Scales Instructions
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Sun Hemmi 153 Occupied Japan
ISRM 12.06.18.03
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Sun Hemmi 153 Occupied Japan - For Electrical Engineer
Made in Japan - Purchased in Nagasaki, 1949
Front Scale:
L, K, A [ B, CI, C ] D, T, Gθ
Back Scale:
θ, Rθ, P(sin) [ Q(cos), Q', C ] LL3, LL2, LL1
Note: Engraved with "Occupied Japan", no other date code. Japan was occupied by the U.S. Armed Forces September 1945 and the treaty to un-occupy was September 1951, becoming effective April 1952.
This slide rule was put on eBay by RAdm Rhoad's grandson. It was purchased and Donated By Rod Vance of Australia, Friend of the Museum.
This slide rule was purchased by Rear Admiral Forrest (Dusty) Rhoads while on assignment in Nagasaki, Japan in 1949. Prior to WW-II he owned a Dietzgen 1740 which can be seen in the Dietzgen Gallery.
Forrest Alexis Rhoads (1898-1965) was a career naval officer in the United States Navy and his career spanned from an Apprentice Seaman to Rear Admiral and he served in both WWI and WWII. The pictures show him in rank from apprentice Seaman (on left, 1916 on the USS South Dakota), Seaman 1st Class (on left, c1920), Captain (1947), Rear Admiral (on right, 1949) and his final promotion at the National Memorial Cemetary in Honolulu, Hawaii (1965). See an expanded biography at ancestry.com.
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Sun Hemmi 153 For Electrical Engineer
ISRM 12.06.24.09
During his time at Harvard, when he used this slide rule, Bill was in the "Folksingers 'Round Harvard Square" with Joan Baez, when she was 18, along with Ted Alevizos. At graduation, Bill traveled to Palo Alto, California to continue studies at Stanford. Joan Baez continued her singing career by traveling to the 1959 Newport Folksong Festival.
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Sun Hemmi 153 For Electrical Engineer
Made in Japan. Note arrangement of Model number and Logo. No date code.
Front Scale: L, K, A [ B, CI, C ] D, T, Gθ
Back Scale: θ, Rθ, P(sin) [ Q(cos), Q', C ] LL3, LL2, LL1
Originally belonged to William (Bill) Barry Woods III, used at Harvard, Cambridge, Mass.
Bill Wood is a Distinguished Professor Emeritus at the University Of Colorado, Boulder. His specialty is in
Molecular, Cellular & Developmental Biology. The son of a scientist, Dr. William Barry Wood Jr.(1910-1971), Bill received his A.B. in Chemistry at Harvard, his father and grandfather's alma mater, in 1959. Bill then received his Phd in BioChemistry at Stanford in 1963.In 2014, William B. Wood received the Arthur Kornberg and Paul Berg Lifetime Achievement Award, Stanford University Medical School.
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Sun Hemmi 153 (1961)
ISRM 12.06.24.09
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Sun Hemmi 153 - For Electrical Engineer
Made in Japan - Date code LI (Sep 1961)
Front Scale: L, K, A [ B, CI, C ] D, T, Gθ
Back Scale: θ, Rθ, P(sin) [ Q(cos), Q', C ] LL3, LL2, LL1
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Donated by Anonymous collector and daughter.
The collector, who prefers to remain anonymous, obtained a B.S. degree in Physics from Taiwan's National Tsing Hua University in 1971. His love for computation has encouraged him to build a collection of slide rules, HP and TI calculators, as well as abaci, many displayed at ISRM.
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Hemmi 250 Basic Trig (1953)
ISRM 21.08.07.05 |
Sun Hemmi 250 Basic Trig
Made in Japan - Date Code DE (May 1953)
Note: Alternat DF scale labeling and cursor bar.
Front Scale:
K, A [ B, TI2 Cot, TI1 Cot, SI Cos ] D, DI
Back Scale:
DF [ CF, CIF, CI, C ] D, L
Gifted by William Lisowski of Pennsylvania
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Hemmi 250 Basic Trig (1962)
ISRM 18.04.06.130 |
Sun Hemmi 250 Basic Trig
Made in Japan - Date Code MH (August 1962)
Front Scale:
K, A [ B, TI2 Cot, TI1 Cot, SI Cos ] D, DI
Back Scale:
DF [ CF, CIF, CI, C ] D, L
Original Owner: Jane Warner (marked on sleeve flap)
Gifted by Leroy Hausler Collection
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Hemmi 251 for Mechanical Engineer (1951)
S325 |
Sun Hemmi 251 - For Mechanical Engineer (V1 scale set - logo in center)
Made in Japan - Date Code BC (March 1951)
Front Scale:
K, A [ B, T Cot, S Cos, ST, C ] D, LL3, LL2, LL1
Back Scale:
L, DF [ CF, CIF, CI, C ] D, DI
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Sun Hemmi 251 for Mechanical Engineer MIOJ (1953)
ISRM 15.02.28.01 |
Sun Hemmi 251 for Mechanical Engineer MIOJ (V1 scale set - Logo on right)
Made in Occupied Japan - Date Code DC (March 1953)
Front Scale:
K, A [ B, T Cot, S Cos, ST, C ] D, LL3, LL2, LL1
Back Scale:
L, DF [ CF, CIF, CI, C ] D, DI
Note: MIOJ marking were from August 1945 until April 28, 1952
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Sun Hemmi 251 for Mechanical Engineer (1956)
ISRM 23.12.01.02
-513_parked_c1952_th.jpg)
Korea 1952 - VMF(N)-513 F3D-2 Skyknight and MiG-15
Exerpt from the Smithsonian magazine "Deadliest Night Fighter": That summer, Marine fighter squadron VMF(N)-513 (“N” for “night”) acquired F3D-2s. The squadron was known as the Flying Nightmares. Assigned the dual missions of bomber escort and combat air patrol over United Nations-held territory, the pilots hunted MiG-15s and on November 8 bagged the first one. Captain Oliver R. Davis and his radar operator Warrant Officer Dramus F. "Ding" Fessler were flying at 19,000 feet when a U.S. ground controller radioed from a radar intercept site: enemy aircraft 10 miles straight ahead and nearly 7,000 feet below. Diving at full speed to catch up to the target, the Skyknight crew stalked the bandit with their radar. Davis reported having to apply full power while closing with the enemy, but once within range, he fired into the bright glow of the MiG’s tailpipe, sending the aircraft down in flames. Russian sources do confirm this kill and that the pilot, a Lieutenant Kovalyov, ejected safely.
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Sun Hemmi 251 for Mechanical Engineer (V1 scale set logo on right)
Made in Japan by Sun Hemmi - Date Code GA (Jan 1956)
Note: The sleeve is from an aircraft load and balance slide rule made by Cox & Stevens, Co. The #172897 is typically a tail number to the corresponding aircraft.
Front Scale:
K, A [ B, T Cot, S Cos, ST, C ] D, LL3, LL2, LL1
Back Scale:
L, DF [ CF, CIF, CI, C ] D, DI
Gifted by Debra Davis Goeks of Cederburg, WI. Belonged to her father O.R. Davis.
Oliver Reeves Davis was born March 6, 1924 in Garfield, Georgia.He graduated from high school in 1940 and worked in Nashville, Tennessee, and Savannah, Georgia, until he was old enough to enlist in the U.S. Navy as an Aviation Cadet in 1942. He earned his wings and was commissioned a 2nd Lieutenant in the U.S. Marine Corps on September 14, 1943. During flight training at Naval Air Station-Dallas in 1943, he met Maribelle M. McLaurine and were married in 1944. He earned his carrier qualification and served as a flight instructor during WWII. His career included tours of duty in China, Korea, Japan and Vietnam. Reeves was assigned to several night fighter squadrons. With VMF(N)-513 squadron, he is credited with the first confirmed nighttime kill of a MiG-15 in Korea while flying his F3D-2 Skynight. While serving in Vietnam as G-4 of the 3rd MAF (1968-69), He flew emergency flare planes at night, supporting helicopter that picked up reconaissance teams out of the bush. He wrote, "I first went to war as a fighter pilot, packing four 20mm cannons in a 450-knot fighter plane, but to me that was never as satisfying as finding a place in the jungle, at night with lots of help, and dropping flares to light a place where another pilot and crew could land and pickup a wounded fellow Marine to bring him out safely." He retired after 30 years of active service with the rank of Colonel. Looking back on his career he wrote, “There were hard times, scary times, anxious times, and fun times, but most of all they were all Good Times. I was then and still am proud of my service to my country, and would do it again in a minute.” His decorations include the Legion of Merit, the Distinguished Flying Cross, and many other commendations. Reeves earned an MBA from the University of Texas-Dallas.
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Sun Hemmi 251 for Mechanical Engineer (1960)
ISRM 15.11.03.01
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Sun Hemmi 251 - For Mechanical Engineer (V2 scale set)
Made in Japan - Date code KJ (Oct 1960)
Front Scale:
K, A [ B, T Cot, S Cos, ST, C ] D, DI
Back Scale:
L, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Note different scale set ( DI,LL3, LL2, LL1) and logo position than the 1951 version above.
Donated By Randy Rash in memory of his father Charles (Chuck) Elmer Rash (1918-1989) of Portland, Oregon.
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Randy writes about his father: "I have all his flight logs and am still staggered by all the different aircraft he flew during his career. The majority involve seaplanes during World War 2 used for submarine hunting and later after the Korean War he flew helicopters. Also with the express purpose of sub hunting. He started in the Navy as a rear gunner/radio man in the Douglas Dauntless and similar aircraft. He was what I believe was considered a "Mustang Officer". He started out as enlisted and later gained officer status after becoming a pilot. One interesting thing was he spent some time teaching Air Force pilots to land on aircraft carriers using the North American T-28 Trojan."
There are two other slide rules used by Chuck Rash, and more pictures, shown in the Pickett, Circular and Aerospace galleries.
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Sun Hemmi P253 Vectorlog dcUA (1971)
ISRM 24.07.04.60.X |
Sun Hemmi P253 Vectorlog dcUA (1971)
Made in Japan - 18 scales
Front Scale: K, A, [ B, TI2Cot2 , TI1Cot1, SI CosI ] D, DI
Back Scale: LL2, LL3, DF, [ CF, CIF,CI, C ] D, L, LL1
Donated by the Tom Dilatush Collection
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Hemmi 255 Expert Electrical Engineer
ISRM 21.02.02.01 |
Sun Hemmi 255 - For Expert Electrical Engineer
Made in Japan by Sun Hemmi - Date code ID Apr1958
Front Scale:
Sh1, Sh2, Th, A [ B, TI2, TI1, S1, C ] D, χ, θ
Back Scale:
L, K, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Original Owner: Gjovig (etched on brace)
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Hemmi 255
S071 |
Sun Hemmi 255 - For Expert Electrical Engineer
Made in Japan - Date code EF- Had US Gov't on it
Front Scale:
Sh1, Sh2, Th, A [ B, TI2, TI1, S1, C ] D, LL3, LL2, LL1
Back Scale:
L, K, DF [ CF, CIF, CI, C ] D, χ, θ
Original Owner/Location: K.Fooshee/USA
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Hemmi 255D Expert Electrical Engineer (1966)
ISRM 22.04.09.02 |
Sun Hemmi 255D - For Expert Electrical Engineer
Made in Japan - Date code QB 1966 - rearranged scales
Front Scale:
Sh1, Sh2, Th, A [ B, TI2 Cot2, TI1 Cot1, SI Cos, C ] D, DI, χ, θ
Back Scale:
L, K, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Gifted by Phillip Rodley of Upper Hutt, New Zealand.
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Hemmi 256 - For Radio Communications (1953)
ISRM 14.01.09.01
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Sun Hemmi 256 - Radio Communications
Made in Japan - for the Electronic Engineer - Date code DG (1953)
Front Scale:
A, L [ C, S1, T1 ] D, λ, F
Back Scale:
L, db, Neper, DF[ CF, CIF, CI, C ] D, LL3, LL2, LL1
Original Owner: Arthur McCusker.
Gifted by his step-daughter, Jodie Adams, and grandson, Jason Adams, of Boise, Idaho.
Arthur Eugene McCusker (1931-2013) used this slide rule (and the Hemmi 2634 in the gallery, most likely purchased while in Japan) during his 30 year career in the U.S. Navy. He entered the Navy as a Seaman Recruit in 1950 and retired in 1980 as a Commander. He served during the Korean and Vietnam conflicts. After his military retirement Arthur was employed for 10 more years by San Diego defense contractors working on electronic warfare systems.
He lived in Las Vegas, then relocated to Boise, Idaho where he became very active in his Parish.
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Hemmi 256 - For Radio Communications (1953)
ISRM 17.08.24.01
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Sun Hemmi 256 - Radio Communications
Made in Japan - for Electronic Engineers - Date code LC (march 1961)
Front Scale:
A, L [ C, S1, T1 ] D, λ, F
Back Scale:
L, db, Neper, DF[ CF, CIF, CI, C ] D, LL3, LL2, LL1
Original Owner: Dustin E. Morris of Tempe, Arizona
Gifted by his wife, Nancy Morris, of Tempe, Arizona. who gifted the Dustin Morris Collection to ISRM.
Dustin E. Morris (1939-2017) Dustin, shown in this photo, holdin his father's slide rule next to a Navy ship model. His father was a Naval engineer, so he started out young using a slide rule. He enlisted in the Coast Guard after high school where he started his career in electronics. Dusty worked for Motorola in the Phoenix area for 33 years. He went to ASU in the evenings until he earned his engineering degree. Dusty was a ham radio operator W7ITM who enjoyed building his own equipment. He was an active member of the Motorola Amateur Radio Club of Arizona (MARCA) He presented "Home Brew SWR Bridge" during his last year at age 78. Of the mmany slide rules donated to ISRM, by his wife, Nancy, this is one he used quite often in his Amatuer radio hobby. You can see his other personal slide rule, A Pickett N800-ES Log Log and others from his collection in the ISRM galleries.
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Hemmi 257 for Chemical Engineer
ISRM 12.06.23.01
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Sun Hemmi 257 - For Chemical Engineer
Made in Japan by Sun Hemmi
Front Scale:
L, A, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Back Scale:
Ch(A~M), Ch(N~Z), M1 Xw [ M2 X, Temp(F,C,K)°, F(t) ] Kg/cm2,
P mmHg Atm, P inHgVac Lb/in2 Gage , tω °C
Jiro Higuchi Signature
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Owned and donated donated by Jiro Higuchi, Kamakura, Japan
Jiro used this as an chemical engineering student and later when working in a career at Daicel Chemical Industries, Ltd
As a vice-president, he worked with many American companies that were developing writable optical disk media.
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Brief 257
Instructions
Brian C.
Cunningham
Collection
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Hemmi 257L - For Chemical Engineer
ISRM 24.07.04.21
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Sun Hemmi 257L - For Chemical Engineer
Made in Japan by Sun Hemmi
Note: Back scales on lower slide and stator slightly different than the 257
Front Scale:
L, K, A, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Back Scale:
Ch(A-M), Ch(N-Z), M1 Xw [ M2 X, T (°F,°C,°K), LM a/b, LM a:b ]
mm hg atm., Kg/cm2, in.Hg.Vac. lb/in2 gage, tω °C
Gift Of Tom Dilatush Collection
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Hemmi 258 (Post 1460 Versalog) 1951
ISRM 09.01.12.30
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Hemmi 258 (Post 1460 Versalog)
Made in Japan by Hemmi - Date code BA - March 1951
Front Scale:
LL/1, LL/2,
LL/3 [ T/T,
SecT/ST, Cos/S, C ] D, LL3, LL2, LL1
Back Scale:
LL0, LL/0, K, DF [ CF, CIF, CI, C ] D, R1, R2, L
Note: Cos label printed in Black. This is the first and only version where Hemmi 258 appears on a Post Versalog
Donated by David Hecht, New York
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Hemmi 259 Mechanical Engineer (1953)
ISRM 14.10.11.02.X (Deaccessioned 8/23) |
Sun Hemmi 259 - For Expert Mechanical Engineer dcDK (Nov 1953)
Made in Japan - 26 scales
Front Scale:
L, K, A [ B, T Cot, S Cos , ST Cos, C ] D, LL0, LL/0
Back Scale:
LL/1, LL/2, LL/3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
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Hemmi 259 Mechanical Engineer (1954)
ISRM 19.05.04.06 |
Sun Hemmi 259 - For Expert Mechanical Engineer dcDK (March 1954)
Made in Japan - 26 scales - Note the Revision 2 scale set differences.
Front Scale:
L, K, DF [ CF, CIF, CI, C ] D, LL0, LL/0
Back Scale:
LL/1, LL/2, LL/3, A [ B, T Cot, S Cos , ST Cos, C ] D, LL3, LL2, LL1
Gift of the Terry Whitsel Collection, Loveland, Colorado
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Hemmi 259-D Expert Mechanical Engineer dc-MB (1962)
REF S358 |
Sun Hemmi 259 For Expert Mechanical Engineer
Made in Japan - date code MB (Feb 1962)
Note: Added "DI" scale.
Front Scale:
L, K, A [ B, T Cot, S Cos , ST Cos, C ] D, DI, LL0, LL/0
Back Scale:
LL/1, LL/2, LL/3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Original Owner: George Ingram, Houston, Texas. U.S.A. Graduate of Texas A&M University. George
received this as a gift from his parents who ordered it with his name engraved on it through
Edmund Scientific.
He used this for performing Fast Fourier Transforms Calculations in the 1960's and 1970's by hand.
As of 2011 he is a Computer Scientist in Columbia, Missouri.
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Hemmi 259D Expert Mechanical Engineer (1969)
ISRM 22.05.06.18 |
Sun Hemmi 259D - For Expert Mechanical Engineer
Made in Japan - date code TC (March 1969)
Front Scale:
L, K, A [ B, T Cot, S Cos , ST Cos, C ] D, DI, LL0, LL/0
Back Scale:
LL/1, LL/2, LL/3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Gift Of Nancy Ulrich. Husband Ted Ulrich's Collection
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Hemmi 259D-S Expert Mechanical Engineer (New Scale Set)
REF |
Sun Hemmi 259D-S - For Expert Mechanical Engineer (New Scale Set) 1970
Made in Japan - date code UJ (Oct 1970)
Front Scale:
LL0, LL/0, A [ B, T Cot, S Cos , ST Cos, C ] D, √1, √2, L
Back Scale:
LL/1, LL/2, LL/3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Archive - Scan provided by Trevor Dewey
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Sun Hemmi 260 Advanced Engineer (1968)
ISRM 20.03.16.01 |
Sun Hemmi 260 Advanced Engineer dcSC May 1963
Made in Japan
Front Scale:
LL/0, LL0, K, A [ B, T Cot,
S Cos, ST, C ] D, DI, P, L
Back Scale:
LL/1, LL/2, LL/3, DF [ CF,
CIF, CI, C ] D, LL3, LL2, LL1
Gift of Catherine Young of Oak View, California,
Belonging to Catherine's grandfather, James Whittier Morrill who was an army chaplain and most likely bought the slide rule in Japan on one of his tours or traveling after retirement. Manual is in Japanese. The U.S. Senate Congressional Record shows he was promoted to Captain in 1953. (O66184).
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Sun Hemmi P261 (1973)
ISRM 09.01.12.31 |
Sun Hemmi P261 dcXE
Made in Japan - date code XE (May 1973)
Front Scale:
T Cot, ST ST, K, A [ B, BI, CI, C ] D, L, P, S Cos,
Back Scale:
LL01, LL02, LL03, DF [ CF,
CIF, CI, C ] D, LL3, LL2, LL1
Donated by David Hecht, Alexandria, VA
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Sun Hemmi P262 (1973)
ISRM 09.01.12.32 |
Sun Hemmi P262 dcXG
Made in Japan - date code XG ( July 1973)
Front Scale:
K, A R1, R2 [ T2 Cot2, T1 Cot1, ST ST, S Cos, C ] D, L, LL00, LL0
Back Scale:
LL01, LL02, LL03, DF [ CF,
CIF, CI, C ] D, LL3, LL2, LL1
Donated by David Hecht, Alexandria, VA
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Hemmi 264 Log Log Decitrig (1968)
ISRM 21.03.22.01.X |
Hemmi 264 Log Log Decitrig dcSI
Made in Japan - date code SI ( Sep 1968)
Front Scale:
K, A [ B, TI2 Cot2, TI1 Cot1, SI Cos] D, L, LL1
Back Scale:
LL3, LL2, DF [ CF, CIF, CI, C ] D, L, LL1
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Hemmi 266 Electronics (May 1966)
ISRM 21.02.22.01.X
| Sun Hemmi 266 Electronics - For Electronic/Radio Engineer
Made in Japan by Sun Hemmi dcQE May 1966
Front Scale:
LL3-, LL2-, LL2 A [ B,
BI, CI, L ] D,
dB/L, S Cos, T Cot
Back Scale:
XL, Xc, T1 [ T2, L,
Xc, R, Tc, F, fm, y1, P, y2, Q, Cf, C, C, Cz ] L, Z, fo, λ
Note: Leather sleeve embossed as TAMAYA.
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Hemmi 269 - Civil Engineer
ISRM 24.07.04.61.X
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Sun Hemmi 269 - For Civil Engineer
Made in Japan - shown in unopend sealed polybag.
Front Scale:
L, F, K, A [ B, K', CI, C ] D, LL3, LL2, LL1
Back Scale:
CL, SL, M, TL [ R, ST COS-COT, , T COT, , S COS, , C ] D, DI, , SIN COS (1), SIN COS (2)
Tom Dilatush Collection
Reference Image from Herman van Herwijnen's SRC
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Sun Hemmi P280 LogLog dcVF (1971)
ISRM 15.05.12.10 |
Sun Hemmi P280 LogLog dcVF (1971)
Made in Japan by Hemmi.
Front Scale:
T Cot, K, A [ B, CI, C ] D, L, S Cos, ST ST
Back Scale:
[ LL1, LL2, LL3 ]
Donated by Colin Barnes, United Kingdom
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Sun Hemmi P281 (1970)
ISRM 14.02.10.03
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Sun Hemmi P281 - date code UC (March 1970)
Made in Japan by Sun Hemmi
Front Scale:
T Cot, K, A [ B, CI, C ] D, L, S Cos, ST ST
Back Scale: Blank.
Original Owner: Mary Northcote, England. Label on back of stock.
Gift of Jane Northcote, London, England, Mary Northcote's older sister.
Mary Northcote (1958-) musician. Mary used this slide rule for her Zoology degree at Oxford in the 1970s and 80s.
 P280 and P281 Instructions 4.31MB PDF
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Sun Hemmi P283 (c1973)
ISRM 09.01.12.34 |
Sun Hemmi P283
Made in Japan - c1973
Front Scale:
K, A, DF [ CF, CI, C ] D, L, T Cot, S Cos
Back Scale:
[ LL1, LL2, LL3 ]
Donated by David Hecht, Alexandria, VA
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Hemmi P452 - Business, System H. Kroon
ISRM 09.01.12.35 |
Hemmi P452 - Business, System H. Kroon
Made in Japan - date code UC (Mar 1970)
Front Scale:
LL1, LL2, LL3, CR DF [T CF, CIF, % CI, T C] R D, L, in, cm
Back Scale:
ST, 3n-2 K, 2n-1 A [B, BI, CI, C] D, P, S, T
Donated by David Hecht, Alexandria, VA
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Hemmi 2634 (Made in Occupied Japan)
ISRM 14.01.09.02 |
Hemmi 2634 - For General Engineer
Made in Occupied Japan
Front Scale: 5in // K, DF [ CF, CI, C ] D, A
Back Scale: [ TI1, TI2, L, SI1 ]
Original Owner: Arthur McCusker. Bio provided by his step-daughter, Jodie Adams, and grandson, Jason Adams, of Boise, Idaho.
Arthur Eugene McCusker (1931-2013) used this slide rule (and the Hemmi 256 in the gallery, most likely purchased while in Japan) during his 30 year career in the U.S. Navy. He entered the Navy as a Seaman Recruit in 1950 and retired in 1980 as a Commander. He served during the Korean and Vietnam conflicts. After his military retirement Arthur was employed for 10 more years by San Diego defense contractors working on electronic warfare systems.
He lived in Las Vegas, then relocated to Boise, Idaho where he became very active in his Parish.
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Sun Hemmi 2664 WWII era
ISRM 21.10.12.01 |
Sun Hemmi 2664 WWII Wartime era 1940-1945
Made in Occupied Japan - Celluloid laminated Bamboo construction, metal joint.
Note: Obround rear window ports for trig scales.
Note: Replaced damaged cursor from 50W, 80 or 300).
Front Scale:
27cm // K, DF [ CF, CI, C ] D, A+L || 10in
Back Scale:
[ TI2, TI1,SI2, SI1 ]
Note: A+L scale is left half of A scale joined to right half of L scale.
Back: Conversion Chart missing (most likely it was in Japanese.)
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Sun Hemmi No. 2664
ISRM 13.08.12.05 |
Sun Hemmi 2664
Made in Occupied Japan (MOIJ) - Celluloid laminated Bamboo construction, metal joint.
Front Scale:
10inch // K, DF [ CF, CI, C ] D, A \\ 27cm
Back Scale:
[ TI2, TI1, L, SI1 ]
Back: Conversion Chart (English)
Gift of Phillip Rodley, Upper Hutt, New Zealand
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Hemmi 2664S - For General Business
ISRM 14.01.03.04 |
Sun Hemmi 2664S - For General Business
Made in Japan - Celluloid laminated Bamboo construction, metal joint.
Front Scale:
10inch // K, DF [ CF, CIF, CI, C ] D, A \\ 27cm
Back Scale:
[ TI2 Cot, TI1 Cot, L, S Cos]
Back: Conversion Chart, Weights of metals (English)
Original owner: M.W. Baker,(marked on cardboard sleeve), New Zealand?
Gift of Phillip Rodley, Upper Hutt, New Zealand
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Foxboro Flow And Valve Rule (Hemmi)
ISRM 11.11.11.01 |
Foxboro Flow And Valve Rule (Hemmi)
Made in Japan
Front Scale: Flow Calculation
Flow Nozzle d/D, Quadrant Edge d/D, r/D, Flange d/D [ D, Gas T, p, G; Steam p; Liquid T, P, G ] Flow (Gas/Steam/Liquid), V
Back Scale: Control Valve, Reynolds Number
Liquid G, Re [ Fsh, D, Gas G, P, Flow (Gas/Steam/Liquid), psi ] Cv, Gas P2, Steam P2, V
Donated By Carlee Heit, Houston Texas, in Memory of her husband Ray Heit
See other Foxboro Valve Sizing Calculators in the MiscUSA gallery.
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Hemmi P3526 - Basic Slide Rule
REF |
Sun Hemmi P3526
Made in Japan - Plastic Slide Rule. 250 x40 x 3mm
Front Scale:
S, K, A [ B, CI, C ] D, L, T
Back: Blank
Original owner: Found in Aukland, New Zealand
Scan by Paul Ross, Slide Rule Trading Co. Given to Paul by Phillip Rodley, Upper Hutt, New Zealand
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Hughes-Owens 1762 MIOJ Pocket Manneheim
ISRM 18.07.11.09 |
Hughes-Owens 1762 MIOJ Pocket Manneheim c1947-1949
Made in Occupied Japan by Sun Hemmi for The Hughes-Owens Co. Limited.
Front Scale:
A [ B, CI, C ] D
Back Scale: [ S, L, T ]
Back: Equivalents
Gifted by Phil Stanley of Worcster, Massachussettes
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Hugh-Owens 1766 Electronic
ISRM 09.01.12.36 |
Hugh-Owens 1766 - Electronic
Made in Japan by Sun Hemmi
Front Scale:
K, A [ B, CI, C ] D, T
Back Scale:
θ, Rθ, P(sin) [ Q(cos), Q', C ] LL3, LL2, LL1
Donated by David Hecht, Alexandria, VA
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S314 Hugh-Owens 1768 Mannhiem |
Hugh-Owens 1768
Made in Japan by Hemmi for Canadian Distributor H-O
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
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Hugh-Owens 1768C Mannhiem
ISRM 09.01.12.37 |
Hugh-Owens 1768C - date code PA (Jan 1965)
Made in Japan by Hemmi for Canadian Distributor H-O
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
Donated by David Hecht, Alexandria, VA
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Hugh-Owens 1768C Mannhiem
ISRM 09.01.12.37 |
Hugh-Owens 1768C - date code OL (Dec 1964)
Made in Japan by Hemmi for Canadian Distributor H-O
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
Gift Of Nathalie Doiron, belonged to father Henri Doiron, Quebec, Canada
Henri Doiron (1933-2005) was born in Amherst Nova Scotia, Canada. He graduated from the University of New Brunswick in Fredericton in 1955 with a degree in biology, From 1959 to 1988 he taught mathematics, biology, chemistry and physics in Ontario high schools. This slide rule has a date code of 1964, so he may have used it alojng with his students.
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Hughes-Owens 1771
ISRM 12.11.20.01
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Hughes-Owens 1771
Made in Japan by Hemmi and rebranded by Hughes-Owens Co. Limited. - Date code JB - Feb 1959
Front Scale:
10in // A [ B, CI, C ] D, K || 27cm
Back Scale:
[ S, L, T ]
Donated by Ron Dies,Vancouver, British Columbia, Canada
Ron Dies purchased and used this slide rule (see also his DIWA 851/4 pocket slide rule in the Nordic gallery)
when he was studying architecture from 1956-1962 at the University of Manitoba in Winnipeg. He used these slide rules until electronic slide rules became more useful in his career. He is currently owner of Ron Dies Architecture in Vancouver and is near retirement.
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Hughes-Owens 1777
ISRM 09.01.12.38
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Hughes-Owens 1777 dcHK (Same as Post 1460 Versalog)
Made in Japan by Hemmi - Date code HK - Nov 1957
Front Scale:
LL/1, LL/2,
LL/3 [ T/T,
SecT/ST, Cos/S, C ] D, LL3, LL2, LL1
Back Scale:
LL0, LL/0, K, DF [ CF, CIF, CI, C ] D, R1, R2, L
Note: Cos label printed in Black
Original Owner: F. Schmidt
Donated by David Hecht, Alexandria, VA
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Hughes-Owens 1777
ISRM 09.01.12.38
Photos from 1946 and 1969.
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Hughes-Owens 1777 dcJF (Same as Post 1460 Versalog)
Made in Japan by Hemmi - Date code JF - June 1959
Front Scale:
LL/1, LL/2,
LL/3 [ T/T,
SecT/ST, Cos/S, C ] D, LL3, LL2, LL1
Back Scale:
LL0, LL/0, K, DF [ CF, CIF, CI, C ] D, R1, R2, L
Note: Cos label printed in Black
Original Owner: Mel L. Frost (Name on sleeve and book protector).
Gifted by his children, Les Frost and Marian Nurse of Kanata, Ontario, Canada
Merle Leslie (Mel) Frost (1923 - 2010).joined the Royal Canadian Air Force during the Second World War and trained as part of the British
Commonwealth Air Training Plan as a Rigger/Fitter. He was then posted to Linton-on-Ouse in Yorkshire England where he was a member of 426
Thunderbird Squadron as a member of the ground crew on "L" Love one of the Halifax bombers operating out of the base.
He met and married his wife, Jeannie Ferrell, in England, and was posted back to Canada at the war's end.
He continued to serve after the war and was posted to a number of bases in Prince Edward Island,
Manitoba, Zweibrucken Germany, and several bases in Ontario. Mel was also head of aircraft
maintenance in Yemen during a United Nations mission keeping Canadian Caribou twin-engine STOL aircraft
flying in desert conditions. While posted at Trenton Ontario, Canada's main Transport Command base where he was once again
part of 426 Squadron between 1956 and 1966. While there he was a Sergeant, Flight Sergeant, and Flying Officer responsible for the maintenance and
loading of the various aircraft in the fleet at that time. It was during this time that he purchased and used this slide rule in his supervisory role on the hangar
line. He loaned it to his son for a time when Les was in high school.
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Hughes-Owens 341-3010 (1968)
ISRM 09.01.12.39
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Hughes-Owens 341-3010 dcSH (Same as Post 1460 Versalog)
Made in Japan by Hemmi - Date code SH - Aug 1968
Front Scale:
LL/1, LL/2,
LL/3 [ T/T,
SecT/ST, Cos/S, C ] D, LL3, LL2, LL1
Back Scale:
LL0, LL/0, K, DF [ CF, CIF, CI, C ] D, R1, R2, L
Note: Cos label printed in Green
Original Owner: F. Schmidt (inside window)
Donated by David Hecht, Alexandria, VA
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Geotec 341-3012 Versalog II
ISRM 18.04.06.127
|
Geotec 341-3012 Versalog II (Same as Post 1460 Versalog II)
Made in Japan by Hemmi - Date code: WF (June 1972)
Front Scale:
L, LL/1, LL/2,
LL/3 [ T/T,
SecT/SRT, Cos/S, C ] D, LL3, LL2, LL1
Back Scale:
LL/0, K, A, DF [ CF, CIF, CI, C ] D, R1, R2, LL0,
Note: Addition of A scale.
Original Owner: Wisniewski, #3-9842-149 St. (on flap)
Gifted by the Leroy Hausler Collection
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Hughes-Owens 341-3120 Versatrig
ISRM 09.01.12.40
|
Hughes-Owens 341-3120 Versatrig
Made in Japan by Hemmi (same as Post 1450 Versatrig)
Front Scale:
L, A [ T T, SecT ST,
Cos S, C ] D, DI
Back Scale:
K, DF [ CF, CIF, CI, C ] D, R1, R2
Donated by David Hecht, Alexandria, VA
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P142 Hughes-Owens 341-3405 w/ Magnifier |
Hughes-Owens 341-3405 w/ Magnifier
Made in Japan - Late Era for Canada
Front Scale:
4in // A [ B, CI, C ] D
Back Scale:
[ S, L, T ]
|
S291 Hughes-Owens 341-3526 Student |
Hughes-Owens 341-3526 Student
Made in Japan by Hemmi. Same as H-O 1768C
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
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P209 Hemmi Geotec 341-3425 |
Hemmi Geotec 341-3425, dc ID April, 1958
Made in Japan by Hemmi for Canada firm H-O, later Geotec
Front Scale:
5in// A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
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Geotec 341-3690 Versalog II
ISRM 18.07.11.02 |
Geotec 341-3690 Versalog II (Same scales as Post 1460 Versalog II)
Made in Japan by Hemmi
Front Scale:
L, LL/1, LL/2,
LL/3 [ T/T,
SecT/SRT, Cos/S, C ] D, LL3, LL2, LL1
Back Scale:
LL/0, K, A, DF [ CF, CIF, CI, C ] D, R1, R2, LL0,
Note: Addition of A scale.
Gifted by Phil Stanley of Worcster, Massachussettes
|
Philip Stanley retired from engineering to become a full-time dealer in and appraiser of antique scientific instruments and tools as The Analytical Engine. He has written two books on antique measuring instruments, and numerous articles on instruments and technology, and has given several talks on these subjects. Phil appeared on the Antiques Road Show on PBS, as an appraiser, in 2012, 2013, 2014.
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P138 Hughes-Owens B-35 |
Hemmi Hughes-Owens B-35
Made in Japan by Hemmi for Canada firm H-O
Front Scale:
5in // K, DF [ CF, CI, C ] D, A
Back Adv: Compliments of Hughes-Owens
|
Also Canadian brands of Sun Hemmi, 
and Geotec 
.
and Phillippine branded Sun Hemmi's sold as 
.
For the USA branded versions go to 
Page 62
25.8MB PDF
Cardboard case
Inst (21.7MB PDF)
Cardboard Case 
-513_parked_c1952.jpg)
P280 and P281 Instructions 4.31MB PDF
