Thacher's Calculating Instrument

Description:

Thacher's Calculating Instrument, Keuffel & Esser Co., no. 4013, serial no. 5188, c. 1920, consisting of a cylindrical slide with both rotary and longitudinal movement, two logarithmic scales reading from 100 to 1000, and magnifier rides along the triangular bar, mounted to a mahogany base, housed in its original finger-jointed mahogany box, with the original manual, instrument lg. 21 1/2 in.
Estimate $300-400


The absence of a condition statement does not imply that the lot is in perfect condition or completely free from wear and tear, imperfections or the effects of aging. Condition requests can be obtained via email (lot inquiry button) or by telephone to the appropriate gallery location (Boston/617.350.5400 or Marlborough/508.970.3000). Any condition statement given, as a courtesy to a client, is only an opinion and should not be treated as a statement of fact. Skinner Inc. shall have no responsibility for any error or omission.

Keywords