$17.54

Vintage scale rule / ruler by MDS Ltd, London

$29.99

Vintage ENGINEER LENSATIC COMPASS OAG BUSINESS TRAVEL PLANNER Pilot Flight Tool

$24.3

vintage Essel Swiss draftsman's set technical drawing instruments compass

$37.81

VINTAGE UNIS FRANCE ADVERTISING CRANE-BENNETT LTD SLIDE RULE

$1000

NASA Apollo 17 Film Flown

$54.01

Vintage cased Simplon Technical Drawing Insrument Compass set

$14.85

Vintage Unique Legible Slide Rule, Made in England

$10

Vintage Tacro No. 4850 Precision Plastic Scale 3 Sided Ruler in the Case

$10.79

Vintage Faber 57/87 Rietz (Cased)& Blundell Luton Type P.10 Astralon Slide Rules

$127

TOWA BK-24 AUTOMATIC DUMPY LEVEL ROAD SURVEYING OPTICAL INSTRUMENT

$16.25

Vintage Wonderfully Cared for Germany Opisometer with 2 sides for Calculations

$194.43

Vintage amphere-volt-ohm meter AVO-5M1 USSR SOVIET