$19.99

1962 PD News Contract Engineering Directory Info Book for Engineer Applicant MCM

$303.8

Holtzapffel & Co. London Radius Drawing curves 250" to 1000" in 20 Radii

$20.99

Tower 9 Pocket Calculator Double Sided Abacus Western Germany Vintage w case

$281.04

Theodolite E R Watts & Sons in Leather Bag Vintage ra

$49.28

Authentic 'Stacked Battery' Box Weighing Bronze 19th Century 1 Pound 500 Grams

$178.8

Dumpy Level Optical Transit Surveying Alidade Scientific Instrument

$5.74

1974 POPULAR SCIENCE FEBRUARY Vol. 204 No. 2

$27.95

Soviet Russian Book Designer NIKOLA TESLA Engineer Electricity 1959 Physicist

$24.3

Vintage Drawing Surveying Instruments x 5

$33.76

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

$28.35

Vintage 1972 USSR Russian Slide Logarithmic Ruler for Engineering Calculation

$31.04

VINTAGE ADVERTISING RULE RULER SUPRASTEEL FREDERICK JONES & SON OSWESTRY SHROPSH