Brass Sighting Instrument by Hall Colby, marked Hall Colby's Patent February 22, 1870 , the 4 in. radius half circle calibrated 0-90 in two directions, adjustable ring marked on one limb Altitude and 0-30, the other marked Zenith and 0-30, top-mounted telescope sight with crosshairs, sun shades, and wooden handle.
Auctioneer:
Skinner
Date:
2009-07-25
Brass Transit Instrument by W. R. Williams, Newport, (possibly England), mid-19th century, with 2-inch lens, 26-inch body tube, Newtonian eyepiece with rack-and-pinion focusing, vertical circle Read more…
Auctioneer:
Skinner
Date:
2002-04-13
Brass Transit Theodolite by Hall Bros., Croydon, England, mid-20th century, with 9-inch telescope, vertical circle with verniers and magnifiers over enclosed horizontal circle on three-screw Read more…
Auctioneer:
Skinner
Date:
2002-04-13
Early Brass and Mahogany Sighting Instrument, 19th century, the brass instrument with pinned mahogany accents, hinged lower legs with two threaded brass knobs for attaching Read more…
Auctioneer:
Skinner
Date:
2014-11-01
Early American Artillery Sighting Instrument, c. early 19th century, round brass plate with scale and level, with two standing sights, square brass shaft, beveled on Read more…
Auctioneer:
Skinner
Date:
2014-05-03
Brass Solar Compass by W. & L. E. Gurley, Troy, New York, the brass instrument with Burt's solar attachment, horizontal circle read by opposing verniers, Read more…
Auctioneer:
Skinner
Date:
2010-11-20
Unmarked 19th Century Sighting Instrument, probably England, triangular base with central bubble level, vertical half circle scale divided 0-90, pivoting sighting arm rides along scale Read more…
Auctioneer:
Skinner
Date:
2018-04-20
Brass Wye Level by E. D. & Co., Chicago and New York, brass and green anodized finish instrument with 11 3/4-inch sighting scope, dual spirit Read more…
Auctioneer:
Skinner
Date:
2010-11-20
Brass Pocket Sextant by Cary and a Boxwood Gunter's or Gunner's Rule, 19th century, 3-in. brass instrument marked Cary London , with silvered scale, index Read more…
Auctioneer:
Skinner
Date:
2016-04-29
Brass Surveying Compass by Frye & Shaw, New York, circa 1840, 5-inch dia. engraved silvered dial marked Frye & Shaw 222 Water St. New York Read more…
Auctioneer:
Skinner
Date:
2010-11-20
Thatcher's Calculating Instrument by Keulfeel and Esser, New York, patented 1881, paper covered scales on a 20-inch revolving brass cylinder on a mahogany base, wooden Read more…
Auctioneer:
Skinner
Date:
2010-11-20
