Clocks, Watches & Scientific Instruments
Description:
Negretti & Zambra Combined Alidade Rule and Square, London, 19th century, lacquered, and anodized brass instrument signed on the underside "Manufactured by Negretti & Zambra, London/Patentee George Francis C.E. Chester," two sets of folding sights, and bubble level on the outer edge, engraved faceplate with conversion scales, folding sights, dual bubble levels, vernier, 3-in. silvered compass, housed in its original leather fitted case, lg. 8 in. closed.
Estimate $300-500
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
George Francis C.E. Chester, LondonStephen L. Fletcher
Partner/Executive Vice President and Chief Auctioneer
Director of American Furniture & Decorative Arts
508-970-3000
Jonathan 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.