Archive of Collections

Details and Image

Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Fowler's Circular Slide RuleFowler & Co.UKPressed metal"2-1/2"c. 1932-1934

Notes: Fowler's version of slide rule with a fixed outer scale and rotating inner scale disk. Large knob turns the inner scale disk and smaller know turns front cursor and rear scale. Serial number 14820.

Click on the Condition Code to obtain more details.