$108.24

RARE OLD BRASS ROSS LONDON MILITARY PEDESTAL COMPASS

$27.06

Vintage Richter Drafting Compass Set German Drawing Instruments Dividers c1950s

$135.32

VINTAGE UNBRANDED SURVEYORS LINE of SIGHT PRISMATIC COMPASS

$59

ANTIQUE GERMAN MECHANICAL CALCULATOR SLIDE ADDER ADDIATOR/SUBTRACTOR DUPLEX

$27.99

Celebrate the Century Technologic Achievements TV First Day Cover

$25.7

Vintage Unique Log-Log Slide Rule Brighton Boxed British Engineering Calculator

$15.43

Rare vintage Stanley Stay Rule (circular slide rule - GPO / War Department)

$20.3

Vintage Brass Steel Compass Drawing Technical Draughtsman x 3 WHH Ltd WH WHM

$5.79

1945 Illustration ~ THORNTON OAKLEY ~ Man-made Lightning Tests Huge Transformers

$12.99

Vintage Casio Quick Dialer QD-150 With Case and Original Box

$16.25

Vintage COOKE, TROUGHTON,& SIMMS LTD - Small Triangular Wooden Ruler

$16.31

Rotring Rapid Stop & Go Mechanism Spare Part Art 522 236 Vintage