On Sale At rickdenham.com!

Circular Slide Rule


Vtg Concise Circular Slide Rule No. 28 Japan made 3 3/16" diameter W/ Case Nice

$13.85


Vintage Fullerton Circular Slide Rule No 1450 Acudial Made in Japan

$29.98


Vintage Circular Slide Rule-CONCISE-No. 28-with case-3 1/4"diameter-Japan-Nice

$28.00


Vtg SAMA & Etani Circular Slide Rule No. 90 USA made 3 1/2" diameter W/ Case

$18.85


Vintage Gilson Binary Circular Slide Rule 1931 1940 COMPLETE with instructions.

$10.00


ARISTO AVIAT 610 FLIGHT NAVIGATOR CIRCULAR SLIDE RULE With leather case

$63.00


Vintage Circular Consise Slide Rule & Equivalence Chart No. 28 3-1/8" Dia Japan

$12.99


General Electric Defense Electronics Division Circular Slide Rule Rare!!! 1950

$35.00


Vintage 1968 Sama & Etani US Government Circular Slide Rule & Conversion Tables

$49.00


FULLERTON 1450 Circular Slide Rule with Case

$39.95


Smith Chart Rotary Slide Chart And Circular Slide Rule, 1950’s - 1960’s Microlab

$49.99


Binary Circular Slide Rule 1931 Complete Charles Bruning Company Inc

$30.00


C-Thru Anglo-Metric 1944 Convertisor Circular Slide Rule No. 6 Calculator NEW

$50.00


Circular Slide Rule 15" Quick Conversion Perrygraf 1964 Paper

$7.00


Circular Midget Slide Rule - Vintage Manual Case

$30.00


1965 Russian USSR Engineer Logarithmic Mathematical Circular Slide Rule KL-1

$29.00


NICE! VINTAGE CONCISE CIRCULAR SLIDE RULE 28N ELECTRIC TEMPERATURE MEASURING

$38.99


Vintage Circular Slide Rule w/Sleeve Chrysler Airtemp

$9.99


BELL SYSTEMS GUY RULE CIRCULAR SLIDE RULE

$49.99


Vintage Fearns Tank Capacity Circular Slide Rule Fearns Calculators D20 old 992K

$45.00


1966 Concise Sama & Etani Model EE-112 Circular Slide Rule AC General Products

$32.79


1967 Concise Sama & Etani Model CTCS-552 Circular Slide Rule Allis Chalmers Logo

$39.99


1966 Concise Sama & Etani Model EE-112 Conversion Tables & Circular Slide Rule

$39.99


Vintage PICKETT Metal Circular Trig Slide Rule Model 108 ES + Manual + Protector

$148.00


Vintage CONE - DRIVE Concise Circular Slide Rule w/ Case Japan * (TS)

$24.87


Vintage Concise CONVERSION TABLES and Circular Slide Rule w/ Case CTCS552 * (TS)

$24.87


VINTAGE 1961 USAF ATTACK COMPUTER CIRCULAR SLIDE RULE INSTRUCTIONS! WEAPONS NEWS

$59.99


Concise Circular Slide Rule No. 28 Type-E Master Builders Made In Japan

$22.49


Vintage Circular Slide Rule / Calculator CONCISE No. 28 N Japan, Shell Oil

$45.00


VINTAGE LORAIN PRODUCTS POWER LEAD CALCULATOR - CIRCULAR SLIDE RULE

$24.95


Vintage Circular Slide Rule By FREDERICK POST Midget 4 1/4" diameter w/Instruct

$34.99


Logarithmic Circular Slide Rule KL-1, Vintage 1960s Soviet USSR, two sides #949

$75.00


VINTAGE ESSO CIRCULAR ADVERTISING MARINE SLIDE RULE 1955

$24.99


1995 MEDICAL CIRCULAR SLIDE RULE! 'BODY SURFACE AREA CALCULATOR'! ONCOLOGY! NOS!

$11.99


1957 CONVAIR F-102A DELTA DAGGER PERFORMANCE CIRCULAR SLIDE RULE! CONFIDENTIAL!

$999.99


RARE RUSSIAN USSR SLIDE RULE CIRCULAR KL-1

$30.00


New Stadia Computer Circular Slide Rule+original pack. USA - C Thru Ruler Comp.

$19.99


Post WW2 DDR Cold War military defense army circular rotary slide rule with case

$249.00