$25

Vintage Stern Electric Device

$33.76

VERY RARE Vintage (d) Unique S267 "UNIVERSAL I" Engineering Slide Rule!

$25

VINTAGE LENSATIC COMPASS TRUE NORTH MADE IN JAPAN FIND YOUR WAY HIKING CAMPING !

$472.57

SURVEYING LEVEL BY BREITHAUPT & SOHN, 1877

$33.76

A.W.Faber 51/22 Disponent Slide Rule, Cased, Good Condition.

$8.74

VINTAGE Cahners Caravans Pamphlet with conversion factors USA

$236.29

Antique Pair of Brass Binoculars Troughton & Simms London

$28.35

Vintage 1972 USSR Russian Slide Logarithmic Ruler for Engineering Calculation

$47.26

VINTAGE SHORT & MASON ADVERTISING STEAM GAS VALVE CALCULATOR RULE

$31.04

VINTAGE ADVERTISING RULE RULER SUPRASTEEL FREDERICK JONES & SON OSWESTRY SHROPSH

$16.2

USSR Informatics Poster – Square Root Approximation Algorithm, 1989

$877

HEXE Nuclear resonance gyro in display case.