$40

DEFCON 31 (2021) Badge + Booklet + Lanyard + Stickers + Drawstring Bag

$29.95

Vintage Slide Rule Frederick Post Model 1452-D Universal w Red Case USA Made

$74.5

Vintage GE Aerospace Project 80 Service Award Wooden Pencil Holder & Ceramic Mug

$40

Vintage Keuffel & Esser Compass Drawing Set Drafting Germany Engineering Tools

$29.99

Silicon Wafer Case Cassette 25 Slot Fluoroware Testing Box Test H61-4 Snap Lid

$53.99

Faber-Castell Duplex 2/82 - Slide Rule Calculation and original case – Germany

$47.77

ANTIQUE GERMAN MECHANICAL CALCULATOR SLIDE ADDER ADDIATOR PRODUX SMALL SIZE SI2

$6.5

Vintage Pocket Conversion Factors Handbook Pamplet Size Sillcocks Miller Sales

$5.31

Helix Drawing Pencil Compass circles up-to approx 8" Dividers Drawing

$27

Vintage Richter Drafting Compass Set German Drawing Instruments Dividers c1950s

$12.48

Vintage Rockwell 31R 'Slide Rule Memory' 1975 with Original Case Made In England

$19.79

Antique Old Brass Drawing Compass