$20

Industrial Scientific Instruments, Inches-Millimeters Conversion Calculator

$142.54

Old Dial Comparator Micrometer by Pierre Roch Rolle Switzerland + Case 1900

$53.87

JOB LOT 4 X ANTIQUE VICTORIAN BRASS ARCHITECTS PLAN DRAWING PLATES 0-9 STENCILS

$27.61

TECHNICAL DRAFTING DRAWING SET ORIGINAL HELLERMAN GERMAN VTG Germany

$21.53

Vintage A G Thornton Ltd P.I.C. No:179 Slide Rule with Cover

$12.99

7 LOT VTG 6” METAL & PLASTIC 6” RULERS AIRCRAFT AEROSPACE AIR FORCE

$42.5

Vintage Morse HS 1/6 RH made in USA

$383.81

Vintage Drawing Set, German, Architect, Cartographer, Tools, Lotter, Circa 1950

$33.67

Vintage ALBERT NESTLER Darmstadt Germany SLIDE RULE No. 21 DRP- Original Box

$10.1

Vintage Rulers 6" George Wragge G Dew etc

$16.16

VINTAGE 1961 VERY HANDY MICROWAVE WAVEGUIDE DATA Slide Rule 16 X 7 cm

$39.99

1986 INTRODUCTION TO MECHANICAL SHOCK PRESENTED AT TECH MEETING BY HENRY PUSEY