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William Helfricht Surveyor's Compass

Auction:
3147M
Lot:
259
Sold for:
$246$200

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Auction:
Clocks, Watches & Scientific Instruments - 3147M
Location:
Marlborough
Date / Time :
October 05, 2018 10:00AM

Description:

William Helfricht Surveyor's Compass, Philadelphia, Pennsylvania, mid-19th century, 5 1/2-in. dia. silvered dial engraved as above, vernier, sighting vanes, indexing disc engraved 1-16, (lacking level), mounted with tripod staff.
Estimate $400-500


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

Philadelphia, Ancient Egyptian technology, Circumferentor, Civil engineering, Compass, Equipment, Geodesy, Level, Measurement, Optical devices, Surveying, Technology, Tripod