$174.64

Rare Thales Mechanical Calculator Machine Patent 1950s, Steel Cast Iron

$283.78

Rare Mechanical Calculator VAUCANSON – Model AVA13T – Exceptional Condition

$322.3

Vaucanson Calculating Machine BZ1 Model Brass And Cast Iron Paris 1930

$32.98

Old Spring Scale Pocket Balance 0-12 kg

$231.67

11E10 Precision Balance Trebuchet Solid Silver English Gray Grey & Co 1918

$740.69

E. R. Watts and son London 1912 theodolite WW1 very rare

$47.12

VINTAGE 25CB UNIQUE ADJUSTABLE TRIANGLE RULE RULER MEASURE

$310.61

Rare Machine à Calculer Mécanique BRITANNIC - Guys Calculating Machines - TBE

$5.37

4005401200109 Kredki świecowe trójkątne Faber-Castell 12 kolorów Faber Castell

$308.39

Antique V Large Oak Marine Surveyors-44" Measur Tool Dividers By Tennent Glasgow

$5.05

3154148626121 Kredki Colorpeps Monster trójkątne 12 kol MAPED Maped

$37.71

Vintage Robin M1015 Megohm Ohm-Meter Continuity Tester Original Leather Case