Clocks, Watches & Scientific Instruments
Description:
Four Holtzapffel Measuring Instruments, London, 19th century, a steel protractor calibrated 0-90-0 with damascened 6-in. brass arm marked Holtzapffel Co. London; steel caliper with brass central pivot joint marked Holtzapffel & Co; a 40-degree protractor on a 6-in. brass arm; and a lacquered brass rule marked Scale of Centres inside the Pitch Circle/Holtzapffel & Co. London/Professor Willis's Odontagraph, scale calibrated 40-210 on outer edge.
Estimate $250-350
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
Holtzapffel & Co., Holtzapffel Co., Willis, LondonJonathan Dowling
Director, Clocks, Watches & Scientific Instruments
508-970-3131
Clocks, Watches & Scientific Instruments
From early timekeeping devices to precision regulators, the Clocks, Watches & Scientific Instruments department covers centuries of invention and function with trusted appraisals and world-competitive auctions.