18th Oct, 2019 12:00
Fine Photographica & Instruments of Science & Medicine
A Patent Slide Rule by R F Agnew
English, dated 1913, in boxwood, for the cloth trade with both metric and imperial scales for length and weight, stamped 'R F Agnew's slide rule No 22165 1913 patent applied for', length 60cm. Note: this is an unusually late example of a slide rule designed without a cursor.
Sold for £96
Result plus buyers premium
English, dated 1913, in boxwood, for the cloth trade with both metric and imperial scales for length and weight, stamped 'R F Agnew's slide rule No 22165 1913 patent applied for', length 60cm. Note: this is an unusually late example of a slide rule designed without a cursor.
Auction: Fine Photographica & Instruments of Science & Medicine, 18th Oct, 2019
