$19.95

Slide Rule K & E Keuffel & Esser #4081-3 Log Log Duplex Decitrig w/ Leather Case

$40

ARISTO-SCHOLAR N0. 0903 Vintage slide rule Germany w/box,case, & instructions

$49.99

Lot Of Pickett Weems & Plath Lutz SP Precision Slide Rule Parallel Plotter

$24

Vintage Frederick Post 1460 Versalog Hemmi Bamboo Slide Rule JAPAN Case and Box

$29.95

Vintage A G Thornton Ltd PIC Junior Slide Rule No 281 Made In England

$68.95

Keuffel & Esser K&E 4070-3 Polyphase Duplex Trig Slide Rule — Perfect: FREE Ship

$9.85

Vintage 12" wooden advertising ruler lot of 3 White, Pepsi, USPS, Walker Ins, OH

$40

Soviet logarithmic multi ruler, slide Ruler smal made in USSR

$9.99

Friction Loss Pipe Network Calculator CIPRA Cast Iron Pipe Research 1966 & Case

$12.6

Leningrad Slide Rule Vintage 1972 Russian USSR #5161-57 Engineering w/Pouch

$46.54

Sun Hemmi Bamboo Slide Rule No 45K Vintage Japan Science Engineering Japan R12

$3

Vintage Radio Shack Metric Converter Slide Rule Engineer Tool USA D115-27