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Circular Slide Rule


Vintage Concise Circular Slide Rule No. 28 with Cover & Manual

$12.50


Vintage Concise Circular Slide Rule No. 28N Made in Japan

$6.50


Pickett Circular Slide Rule Model 109ES

$89.99


5 Circular Slide Rule Lot Concise 280 CTCS-552 SIC Professional 250 Manual Case

$75.00


Fowler Extra Long Scale Calculator circular slide rule

$33.00


Vintage Concise No 270 Circular Slide Rule Japan

$20.00


Concise Duplex Circular Slide Rule No. 270N, Instructions & Vinyl Case

$36.00


Concise Instruments Circular Slide Rule with Periodic Table, Formulas, Tables +

$15.45


Motorola branded Concise No. 28 N circular slide rule with pouch

$35.00


Vintage 1950's Draftsman or Engineering Circular Slide Rule w/original Case USA

$24.99


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

$31.99


Concise Science Tables & Circular Slide Rule Model 600-CE Sama & Etani 1968

$35.00


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

$45.00


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

$31.99


SHIPS FREE-Vintage Circular Slide Rule+flow, velocity,energy,volume,etc.FACTORS

$39.00


#1 of 19, RARE VTG 1972 "TOWNSEND/TRS CIRCULAR SLIDE RULE" QUICK CONVERSION #'s

$19.99


Engineer Logarithmic Mathematical Circular Slide Rule KL-1 1965 USSR

$35.95


VINTAGE LOGOMAT MINI 2001 world smallest CIRCULAR SLIDE RULE WITH POUCH

$65.00


1934 MASCOT CIRCULAR SLIDE RULE

$45.00


General Industrial paper circular slide rule 1959

$10.00


SAKRETE Sand Concrete Mix Circular Slide Rule Calculator

$14.99


Pickett Circular Mark-up Calculator and Slide Rule Model 103ES Vintage 1980s

$42.50


Controller Circular Slide Rule. 110cm(4½") Diameter. Metal. 4 Scales. Germany.

$48.00


Vintage 1969 Sama & Etani Reference Tables and Circular Slide Rule Nupro

$35.99


BELL SYSTEMS GUY RULE CIRCULAR SLIDE RULE

$49.99


Dietzgen Binary Circular Slide Rule with Instructions and Electrical Stencils

$89.89


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

$59.99


VINTAGE ESSO CIRCULAR ADVERTISING MARINE SLIDE RULE 1955

$24.99


Vtg 1952 Greenlee Tools Co Handy Calculator Circular Slide Rule

$9.99


Vintage 12" Circular Slide Rule BRIX R.S.D. PURITY COMPUTER wine alcohol

$74.76


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

$19.99


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

$60.00


Vintage Concise Micro Switch Circular Slide Rule in Case Made in Japan

$29.99


Antique HALDEN CALCULEX -Circular Slide Rule by J. Halden Co Tables Book

$41.00


"TIME SAVER" CIRCULAR SLIDE RULE AND REFERENCE TABLE

$11.00


TRÖGER XL CIRCULAR SLIDE RULE GERMAN CSR

$59.50


Vintage slide rule circular Cleveland Twist Drill co Drill speeds

$15.00


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

$999.99


VINTAGE GERMAN NORMA GRAFIA 100 D.B.G.M. CIRCULAR SLIDE RULE

$39.99


BIG CIRCULAR SLIDE RULE NORMA MERKURIA 190 DBGM #9

$66.90


RUSSIAN CIRCULAR SLIDE RULE (model KL-1) 1960's. USSR

$44.75


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

$28.99


BIG CIRCULAR SLIDE RULE NORMA GRAFIA 190 DBGM #5

$56.90


BIG CIRCULAR SLIDE RULE NORMA RONDA 190 DBGM MANUAL #3

$59.90