$19.5

Frederick Post Co. Slide Rule . Versalog . No. 1460 . Hemmi Bamboo . Japan .

$35.53

DIWA SLIDE RULE DENMARK 601 Lehigh Blu-Cold Refrigerator Leather Advertising Vtg

$13

Keuffel & Esser Vintage Slide Ruler K&E Rule with Case 4056

$224.25

Foxboro Flow And Valve Rule (Looks Brand New)

$7.49

K&E N4058W Slide Rule Vintage Keuffel & Essex Co. With Case

$19.99

VINTAGE 1960s REGAL SMALL APPLIANCE PROFIT FINDER! CIRCULAR SLIDE RULE! 4" DIA!

$19.99

Vintage 1954 JENN-AIR Air Duct Calculator HVAC Air Conditoning Slide Chart Rule

$12

Vintage Keuffel & Esser KE Co. Slide Rule K-12 Prep 68 1892 Made In USA

$29.95

vintage Japanese sun slider ruler in leather case

$21.22

Vintage Motorola 2-Way Mobile Radio Calculator 1981 Slide Ruler Calculations

$35.49

Vintage Casio and Hewlett-Packard Scientific Calculators Collection

$39.35

Dietzgen Basik Slide Rule White Made in Germany CAT No. 1765P