$12.89

Vintage JETS Junior Engineering Technical Society Member Challenge Coin

$67.5

Allbrit Compensating Polar Planimeter by W F Stanley & Co Ltd, London

$25

Western Electric GE Transistor NOS Gold plated PNP 2N559 Top Seal Fuzz Peddle

$67.5

Antique Proportional Dividers Draughtsman, Engineering, Architecture, Cased

$53.65

☭Vintage Soviet Logarithmic Ruler BOX USSR Mathematical Calculator 100%...

$24

Vintage A Line Academy Folding Camp Shovel Red

$6.08

Angle line ruler 25CB Unique Adjustable Triangle Rule Measure technical used

$6.17

Vintage Unique Slide Rules "Half-Hour" Instructions Booklet / Manual

$16.88

Vintage Engine Divided P I C Slide Rule P172 by AC Thornton boxed & manual

$108.02

Vintage Elliott Brothers Speed Indicator No. 14355

$10.79

Vintage THORNTON Adjustable Set Square QA51A

$15.95

Pin Engineering Maroon Metal Parsons Brinckerhoff Vintage