$17

Mechanical Power Transmission Manual 1953 American Pulley Williams Signed Z1

$24.3

PIC Vintage Slide Rule In Box

$24.19

Chemical & Metallurgical Engineering Magazine January 1939 Charles Goodyear

$40.49

A G Thornton PIC Slide Rule Made In England Engineer Ruler 4622 With Box 1950s

$33.76

Uchida Japan GCR-100 Plastic Architect Engineer Ruler 1 Metre

$24.29

Vintage Classic 11 Slide Ruler Wood Celluloid with Pattern Maker Info on Back

$24.99

1950's TUNG SOL Catalog TELEVISION PICTURE TUBES SUBSTITUTION CHART ET Line

$29.7

Vintage Skala Precision Compass Set Mixed Pieces In Black Case T2750 AC137

$26.99

Vintage Cowley Automatic Level With Original Case - Untested

$50.7

Vintage Slide Ruller Faber-Castell Duplo 52/82 in Clear Case Made in Switzerland

$19.99

1959 ~ API Assembly Products INC ~ Bulletin 104-E ~ Inter-relays

$68.86

Victorian Draughtmans Set