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Micador No. 7 Pocket Darmstad
REF |
Micador No. 7 Pocket Darmstad
Made in Japan (Most Likely)
Front Scale
15cm // LL3, LL2, A [ B, CI, C ] D, LL1
Back Scales:
Unknown
Archive - Scan by Darren Samphier Collection, UK
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Micador 10
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Micador 35
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Micador 50
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Micador 60
REF |
Micador 60
Made in Germany - Same as Aristo 0903 Scholar
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back Scales:
25cm [ ] 8-0,0-8 in
Multiple hairlines
Archive - Scan by Rod Lovette Collection, UK
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Micador 530 Slide Rule
REF
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Micador 530 Slide Rule
Possibly Made in Germany by Dennert & Pape (Aristo)
Front Scale (Extended)
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back:
T Cot, ST ST, DF [ CF, CIF, CI, C ] D, P, S Cos
Scan provided by Steve Seale Collection, Nashville, Tennessee
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Micador Pocket Slide Rule
ISRM 20.04.01.132
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Micador Slide Rule
Made in Japan
Front Scale:
13cm// A [ B, CI, C ] D, K \\ 5in
Back scale: [ S, L, T ]
Gift Of Philip Stanley Collection
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Micador Generic Pocket Slide Rule
Made in Japan by Santok
Front Scale: A [ B, CI, C ] D, K
Back: Blank
Archive - Ebay photo January, 2014
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Service Slide Rule - Electro
REF S440
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Service Slide Rule - Electro
Made by Service Slide Rule, Sydney, Australia
Front Scale (Extended)
LL3, A(KW) [ B(PS), CI, C ] LL2
Back Scale
[ S, L, T ]
Back: Equivalents, Formulae and Trig identities
Original Owner: N. Fogarty/N.S.W. Australia
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Service Slide Rule - Reed (for Electrical Engineers)
REF
Designed by Joseph Grifith Reed, M.I.E., Aust. Chartered Engineer in 1935
See J.G. Reed's entry in Slide Rule Who's Who Gallery.
 REED Instructions (4.37MB PDF)
Read this paper by David G. Rance:
REED Riddle Solved (976KB pdf).
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Service Slide Rule - Reed (for Electrical Engineers)
Made by Service Slide Rule, Sydney, Australia.
Front Scale (Extended)
inch // K, A [ B, CI, C ] D, L || cm
Back Scale
[ S, S&T, T ]
Back: Equivalents, Formulae and Trig identities
Well: D/L scale (Diameter to Length) scale better known as Nagaoka's coefficient.
Note: The scale is more commonly known as Nagaoka's coefficient after its originator, the Japanese physicist
Hantaro Nagaoka (1865-1950). Communication engineers often need to calculate the inductance of electrical
windings, e.g. a solenoid of a certain length, a certain diameter and a number of windings. This previously
unheard of 'Diameter to Length' (0 being the infinite length) logarithmic D/L coefficient scale is a masterly
Reed innovation for reading off the Nagaoka factor. 'K' in the inductance formula in Microhenries - where
d = the diameter in centimetres, b = the length in centimetres and n = the total number of turns. Without
including the K factor there is a serious error due to magnetic non-uniformity when the coil is short and
its length is comparable to its width. This was, for example, frequently the case in coils for the valve
radio industry. (per David G. Rance).
Scans by David G. Rance Collection, The Netherlands
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W&G 421
REF
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W&G 421 Closed
Made in Melbourne, Australia - W&G Record Processing Co.
Front Scale (Extended)
10in // L, A [ B, Reciprocal, C ] D, Cube || 25cm
Back scale: [ Sin, Sin & Tan, Tan ]
Archive - University of Melbourne, School of Physics Museum
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W&G 432 "Dual-Face" Comprehensive
ISRM 14.07.22.01
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W&G 432 "Dual-Face" Comprehensive
Made in Melbourne, Australia - W&G Record Processing Co.
Front Scale
LL (or LL3), L, A [ B, Reciprocal (or CI), C ] D, Cu, LL (or LL2)
Back Scale
SINE1, SINE2, KW [ HP, TANGENT1, TANGENT2, F ] Voltage Drop, Dynamo Efficiency
Unique thumb wheel for sliding cursor.
Gift of Phillip Rodley of UpperHutt, New Zealand.
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W&G 432 "Dual-Face" Comprehensive
ISRM 24.06.10,04
Prof. Dr Garry J. Tee (1933-2024) (B.Sc. 1952, M.Sc. 1954). grew up during the 1930s Great Depression and in the South Island railway camps of that era.
After Garry Tee graduated from Auckland University College as M.Sc. (N.Z.), his first job was as a computer, with an oil prospecting team in
northwest Australia. Continued on right
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W&G 432 "Dual-Face" Comprehensive
Made in Melbourne, Australia - W&G Record Processing Company
Front Scale
LL (or LL3), L, A [ B, Reciprocal (or CI), C ] D, Cu, LL (or LL2)
Back Scale
SINE1, SINE2, KW [ HP, TANGENT1, TANGENT2, F ] Voltage Drop, Dynamo Efficiency
Conventional Cursor. The stock has the same dimension as most Hemmi duplex slide rules, including the Post Versalog, so this may be a Hemmi cursor
Original owner: Dr Garry J. Tee, (1933-18Feb2024), Professor Emeritus (1968) Department of Mathematics, University of Auckland, New Zealand.
Gift facilitated by the Powerhouse Museum, Sydney, Australia with permission from Dr. Tee.
Cont'd In 1958, human computers began to be supplemented by electronic computers in geophysics, and it was obvious to him
that electronic computers were going to become extremely important. Accordingly, he went to England, where he became a mathematician in
English Electric Company, which manufactured DEUCE computers (based on Alan Turing's design for ACE). From 1964 to 1968 he was a
foundation member of the Department of Mathematics at the University of Lancaster, and then he returned to the Department of Mathematics
at the University of Auckland. He has published on numerical analysis and on the history of science, and he has translated books and papers on
numeric analysis from Russian to English. Full Obituary
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ISRM W&G 443 Artillery Slide Rule, VFA 3400 Mk1
ISRM 06.02.07.01
W&G 443 Instructions 6Mb
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W&G 443 Artillery Slide Rule, VFA 3400 Mk1 1945
Made in Melbourne, Australia - W&G Record Processing Co.
Front Scale (extended)
L, A [ B, Reciprocal (or CI), C ] D, Cu
Back Scale (extended)
SINE1 0°-90° & 0-1.000 [ ANGLE2 5.8°-90° @ 174°-90° , ANGLE1 0°34'-5°30' ] RANGE 1-10, TAN 0-45° & 0-1.00
Conventional Cursor
Donated by Stephen Sheen in memory of his father.
This instrument belonged to the late WX1844 Gunner George Sheen (portrait from 1966) of the 2/3rd Australian Field Regiment
(6th Division, 2nd AIF) during WWII. He obtained this at the end of the war. A Christmas menu of 1941 is signed by members of his battery. The emblem is for an officer of the Royal Regiment of Australian Artillery (RAA) and shows the
The (British) Lion and (Australian) Kangaroo representing "imperial solidarity".
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W&G 454 "Dual-Face" Survey
REF
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W&G 454 "Dual-Face" Survey
Made in Melbourne, Australia - W&G Record Processing Co.
Front Scale
Sine, Cos [ Angle 2, Angle 1 ] Range, Tan, Cot
Back Scale
L, A [ B, Reciprocal, C ] D, Cu
Archive - Greg Scott Collection
Instructions 1.05Mb
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W&G 465 "Dual-Face" Shipping Freight & General Purpose Slide Rule
REF
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W&G 465 "Dual-Face" Shipping Freight & General Purpose Slide Rule
Made in Melbourne, Australia - W&G Record Processing Co.
Front Scale
L, A [ B, Reciprocal, CI, C ] D, Cu, K
Back Scales
Pounds-Shillings, Shillings-Pence, T/R, P, D2, D3/D1, CC
Archive - Not in Collection
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W&G 476 "Dual-Face" Trigonometrical (Stadia)
ISRM 21.11.01.01
This slide rule was well-traveled. This specimen was obtained out of Illinois in October, 2021.
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W&G 476 "Dual-Face" Trigonometrical (Stadia)
Made in Melbourne, Australia - W & G Record Processing Co.
Front Scale:
LL (or LL3), L, A [ B, Reciprocal (or
CI), C ] D, Cu, LL (or LL2)
Back Scale:
Stadia V, H, Chord, A [ B, SIN<6 COS>5, SIN>5
COS <6, C ] D, TAN 30-6, COT
84-90, TAN 5-45, COT 85-45
Original Owner: E.A. Bramhall (Marked on slide and sleeve).
The ISRM curator researched the provenance of this slide rule that was owned by Eugene (Gene) Andrew Bramhall. (B. 1922 New York D. 1995 Louisiana) Used it at Univ of London after being discharged as a Private in the U.S. Army where he was stationed in England during World War II. He was in the 455 battalion of General Patton's Third Army in Europe. He met his wife Margaret Cecily Wilson (age 18) at a dance while in England. Maggie's records shows that she flew alone (age 19) by air on Pan American Airways) to New York on August 4, 1946. They were married in Flushing, Long Island, New York,, Note: Hailey Bramhall, granddaughter of Maggie, located the paperwork her grandmother completed on the New York passenger Lists, Gene and Maggie's daughter Teresa "Terri" Cecily Oberholtzer,(1951-2021) who was born in Teaneck, NJ, related that her early life was spent travelling the world with her three sisters, mother and father who worked as a road (civil) engineer. They lived in England, Africa, Bahamas and all over the United States.
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Looking for Examples of:
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W&G MkII Pilot Ballon Slide Rule (1928-1943+)
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W&G Aerial Dead Reckoning Computer R.A.A.F. Mk 1
REF
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W&G Aerial Dead Reckoning Computer R.A.A.F. Mk 1
Made in Australia by White & Gillespie
Front Scale: Distance Naut Miles, True Air Speed (Time Min, Hrs, Density Altitude, Air Temp )
Back Scale: Wind Correction Angle( True Heading )
Scan provided by Cyril Catt. Australia
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W&G Slide Rule Fv
REF
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W&G Slide Rule Fv
Made in Australia by by White & Gillespie
Front Scale
Elevation, ho [ Frequency ] Ohms
Back Scale
Nomagraph: Km, h', degrees
Scan provided by Cyril Catt. Australia
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W&G Proportion Calculator
REF |
W&G Proportion Calculator
Made in Melbourne, Australia - W&G Record Processing Co.
Front Scale
Depth [ Width ]
Archive - not in collection
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