Auction: Clocks, Watches & Scientific Instruments - 2345Location: BostonDate / Time: July 29, 2006 10:00AM
Description:
Thatcher's Calculating Instrument, by Keuffel & Esser Co., New York, No. 4012 / 4142, patd. by Edwin Thatcher 1881, with outer paper-covered scales on revolving brass rings, and 19-inch sliding inner cylinder, on mahogany base with paper instruction label, lg. 21 1/2 in., in mahogany case.
Estimate $1,000-1,500