HOME

Gilson Circular Slide Rules


KEEP ISRM FREE!
This gallery has a many permutaions of the Gilson Slide Rule Company, originally of Niles, Michigan and later of Stuart, Fla. which sold unique designs of Binary and Atlas circular slide rule models. Gilson manufactured slide rules under U.S. patent 1,404,019, issued to Clair A. Gilson for a "Mechanical Calculating Device" on January 17, 1922. The company did not typically "re-Brand" its products as they were sold by many distributors like Dietzgen, Bruning, Lietz and others. You can see other manufacturers in the Circular gallery and view the Concise line of products and Pickett circular slide rules in their respective galleries. Construction is simple as the only only fastener is the single screw or rivet at the center of the disk. A spring washer allows the three cursor arms to sync with each other.



Post Binary 8inch Circular Slide Rule (Model 1464)

ISRM 18.09.17.20
Post Binary 8inch Circular Slide Rule (Model 1464) 8in 21.1cm dia.
Made in USA - Gilson Slide Rule Co.
Front Scales
C,CI,A,K,Log,LL1,LL2,LL3,LL4,Binary, Fraction,Drill,Thread, Millimeter
Back Scales
Degrees, S, T, Degrees, S, T, Degrees, S, T, Fractions
Gift of Donald J. Bachelor Collection
Manual 0.98Mb


Gilson Binary Early Steel Version
Gilson Binary Early Steel Version
Made in USA by Gilson. Printed on steel plate.
Front Scales: C, S-Log.
Back Scales: Degrees, Sines, Cosines, Tangents, Cotangents.
Archive - Originally part of the Conrad Schure Collection. Scan by Jim Bready.


Gilson Atlas (Square base) 20.5 cm dia
Gilson Atlas (Square base) 20.5 cm dia.
Made in USA by Gilson. Printed on aluminum plate.
Front Scales
C, S-Log, C (25 spirals), C-Log, Coils, Constants
Back Scales
Degrees, S, T, Degrees, S, T, Degrees, S, T, Fractions
Archive - Michael Frey Collection


Gilson Atlas Type-3 21.1cm dia

ISRM 15.09.27.02
Gilson Atlas Type-3 21.1cm dia.
Made in USA by Gilson
Front Scales
C, S-Log, C (25 spirals), C-Log, Coils, Constants
Back Scales
Degrees, S, T, Degrees, S, T, Degrees, S, T, Fractions

4.08MB

Gilson 8" Binary Circular

ISRM 21.06.16.01
Gilson 8" Binary Circular (Gilson - 1931, 1940 Copyrights) - 21.4cm dia
Made in USA by Gilson Slide Rule Co., Stuart, Florida
Front Scales
C,CI,A,K,Log,LL1,LL2,LL3,LL4,
Back Scales
Binary, Fraction,Drill,Thread, Millimeter
Original owner: Robert Dehn.
Bob Dehn's Collection gifted by wife Fran (McGroary) Dehn of Menlo Park, California.
Robert "Bob" Dehn (1941-2000) graduated from UC Berkeley with a degree in chemistry. Following his graduation, Bob started work as a pharmaceutical chemist at Stanford Research Institute, which later became SRI International. It was there that he spent his entire professional career. It was also at SRI that he met his wife of 52 years, Fran McGroary. After receiving his MBA from Santa Clara University, Bob moved into marketing and business development for the Life Sciences Division of SRI where he continued until his retirement in 2007..Bob began collecting with his first slide rule while studying at UC Berkeley. During his career he continued to collect from colleagues, antique shows and swaps.


Tavella Sales Branded Gilson Midget
ISRM 21.11.03.05

Tavella Sales Branded Gilson Midget- 10.2cm dia
Made in USA for Tavella Sales Co. 25 W.Broadway, New York. by Gilson Slide Rule Co.
Note: Only Gilson Midget that actually has been rebranded by the OEM
Front Scales (Copyright 1936) twin cursor:
C, CI, A, K, Log, Log-Log, Fraxction Drill, Thread.
Back Scales (Copyright 1936) single cursor:: 1) Degrees,Sines, Tangents 2) Degrees,Sines, Tangents, 3) Degrees,Sines, Tangents, 4) Fractional/Decimal conversion.
Gauge Marks: M=1463, N=2527, W=438, Y=668
Gift Of Karen Eccks of La Mesa, California.
Tavella Manual and catalog cover.


Bruning 2472 (Gilson Midget)
ISRM 17.06.14.03

Bruning 2472 (Gilson Midget)- 10.2cm dia
Made in USA for Bruning by Gilson Slide Rule Co., Stuart, Florida
Note: Copyright 1931 & 1936
Front Scales
C, CI, A, K, Log, LL1, LL2, LL3, LL4,
Back Scales
Binary, Fraction, Drill, Thread, Millimeter
Gift Of Bruce HildenBrand
8MB PDF


Bruning 68-471 (Gilson Binary) 21.1cm dia

ISRM 17.06.14.01
Bruning 68-471 (Gilson Binary) 21.1cm dia.
Made in USA by Gilson for Bruning. Copyrighted 1940.
Front Scales
C, CI, A, K, Log, LL1, LL2, LL3, LL4, Binary, Fraction, Drill, Thread, Millimeter
Back Scales
Degrees, S, T, Degrees, S, T, Degrees, S, T, Fractions
Gift Of Bruce Hildenbrand
Manual 8Mb



Dietzgen 1797B (Gilson Binary) 21.1cm dia

ISRM 17.07.27.02

Dietzgen 1797B (Gilson Binary) 21.1cm dia.
Made in USA by Gilson for Dietzgen (1931 and 1940 Coprights(
Front Scales
C,CI,A,K,Log,LL1,LL2,LL3,LL4,Binary, Fraction,Drill,Thread, Millimeter
Back Scales
Degrees, S, T, Degrees, S, T, Degrees, S, T, Fractions
Gift of Linda N. Boclair, Voohees, New Jersey. Belonged to Step father Spafford W. Schanck.
Manual 3.42Mb


Compass 8" Binary (Gilson) Circular

ISRM 17.08.24.01
Compass 8" Binary Circular (Gilson - 1931, 1940 Copyrights) - 21.4cm dia
Made in USA for Compass by Gilson Slide Rule Co., Stuart, Florida
Front Scales
C,CI,A,K,Log,LL1,LL2,LL3,LL4,
Back Scales
Binary, Fraction,Drill,Thread, Millimeter


Gilson Midget (1919 Patent Pending) Early Artwork

REF
Gilson Midget - 9.9cm dia - 1919 Patent Pending
Made in USA - Gilson Slide Rule Co., Niles, Michigan
Scales front: C, CI, L, A, Binary, LL (Spiral), Fractions, Drill Scale (1/2 turn), Thread Scale (1/2 turn) Binary, Fraction,Drill,Thread, Millimeter
Scales back: Sin/Cos, Degrees, Tan/Cot, Frac/Dec Equiv.
Scan contributed by Ronald Kuc


Gilson Midget (Patent 1-17-1922 Niles, Mich.)
ISRM 13.11.23.01
Gilson Midget - 10.2cm [4in] dia - Patent 1-17-1922
Made in USA - Gilson Slide Rule Co., Niles, Michigan
Scales front: C, CI, L, A, Binary, LL (Spiral), Fractions, Drill Scale (1/2 turn), Thread Scale (1/2 turn) Binary, Fraction,Drill,Thread, Millimeter
Scales back: Sin/Cos, Degrees, Tan/Cot, Frac/Dec Equiv.

Catalog from 1922 (4.06MB PDF)

Instructions from 1922 (2.25MB PDF)


Gilson Midget (Patent 1-17-1922 Stuart, Florida)

REF
Gilson Midget - 10.2cm [4in] - 1927-1931
Made in USA - Gilson Slide Rule Co., Stuart, Florida
Scales front:  C, CI, L, A, Binary, LL (Spiral), Fractions, Drill Scale (1/2 turn), Thread Scale (1/2 turn) Binary, Fraction,Drill,Thread, Millimeter
Scales back:  Sin/Cos, Degrees, Tan/Cot, Frac/Dec Equiv.
Archive - Ted White Collection



Gilson Midget (1931, 1936)

ISRM 11.05.16.01
Gilson Midget (1931, 1936) - 10.2cm dia
Made in USA - Gilson Slide Rule Co., Stuart, Florida
OEM to Dietzgen (1797M), Pickett.
Front Scales (Copyright 1936) twin cursor:
C, CI, A, K, Log, Log-Log, Fraxction Drill, Thread.
Back Scales (Copyright 1931) single cursor:: 1) Degrees,Sines, Tangents 2) Degrees,Sines, Tangents, 3) Degrees,Sines, Tangents, 4) Fractional/Decimal conversion.
Gauge Marks: M=1463, N=2527, W=438, Y=668
Donated By Ric Turley, Pinecliff Colorado, in memoriam for Roy Glenn Wood (1932-2005)
Roy owned this circular slide rule and had attended the University of Colorado at Boulder. He worked as an engineer for Public Service Company of Colorado for more than 30 years.


Gilson Midget Binary 8in Circular Slide Rule (1931, 1936)

ISRM 04.09.27.03.D1 (in display shadow box)
Gilson Midget Binary Circular Slide Rule (1931, 1936) - 10.2cm dia
Made in USA - Gilson Slide Rule Co., Stuart, Florida
OEM to Dietzgen (1797M), Pickett, Lietz, Compass, etc.
Front Scales (Copyright 1936) twin cursor:
C, CI, A, K, Log, Log-Log, Fraxction Drill, Thread.
Back Scales (Copyright 1931) single cursor:: 1) Degrees,Sines, Tangents 2) Degrees,Sines, Tangents, 3) Degrees,Sines, Tangents, 4) Fractional/Decimal conversion.
Gauge Marks: M=1463, N=2527, W=438, Y=668
Adv (on Case): JVG

Compass Midget (1931, 1936)
ISRM 10.09.14.02

David Viscusi

Compass Midget (1931, 1936) - 10.2cm dia
Made in USA for Compass by Gilson Slide Rule Co., Stuart, Florida
Front Scales (Copyright 1936) twin cursor:
C, CI, A, K, Log, Log-Log, Fraxction Drill, Thread.
Back Scales (Copyright 1931) single cursor:: 1) Degrees,Sines, Tangents 2) Degrees,Sines, Tangents, 3) Degrees,Sines, Tangents, 4) Fractional/Decimal conversion.
Gauge Marks: M=1463, N=2527, W=438, Y=668
Donated by David Viscusi, Carlsbad, California David bought this slide rule when he was a Drafting apprentice at General Electric, Schenectady NY (1971). Already well used, it was purchased for $5 from a retiring engineer that helped design Large Steam Turbine Generators. It helped get him through his BSME night courses. David is now an Engineering & Technical Services Supervisor at Gemological Institute of America (GIA)
Instructions


A. Lietz Co. No.3077 Midget Circular Slide Rule

ISRM 21.08.07.20
A. Lietz Co. No.3077 Midget Circular Slide Rule (1938)
Made in USA by Gilson for A. Lietz Co. San Francisco and Los Angeles, Calif.
3 plastic cursors on aluminum disk
Front Scales (Copyright 1936) twin cursor:
C, CI, A, K, Log, Log-Log, Fraxction Drill, Thread.
Back Scales (Copyright 1931) single cursor:: 1) Degrees,Sines, Tangents 2) Degrees,Sines, Tangents, 3) Degrees,Sines, Tangents, 4) Fractional/Decimal conversion.
Gauge Marks: M=1463, N=2527, W=438, Y=668


Dietzgen 1797M (Gilson Midget) V2

ISRM 08.04.10.01

Dietzgen 1797M (Gilson Midget)- 10.2cm dia
Made in USA for Dietzgen by Gilson Slide Rule Co., Stuart, Florida
Note: Copyright date removed from the previous artwork (circa 1960-70) and the background is a darker green.
Front Scales (Copyright 1936) twin cursor:
C, CI, A, K, Log, Log-Log, Fraxction Drill, Thread.
Back Scales (Copyright 1931) single cursor:: 1) Degrees,Sines, Tangents 2) Degrees,Sines, Tangents, 3) Degrees,Sines, Tangents, 4) Fractional/Decimal conversion.
Gauge Marks: M=1463, N=2527, W=438, Y=668
Donated by Bruce Chelf of Porter, Indiana
3.72MB PDF

Copyright © 2003-
International Slide Rule Museum