Ebony 13-inch Radius Octant by Spencer, Browning & Rust, with bone arc divided 0-95 , brass index arm with vernier, clamp and tangent-screw adjustment, vacant plaque, pinhole sights, shades, and reflector (silvered), in ebonized case with early label of Richard Patten, Mathematical Instrument Maker, 180 Water St. , New York .
Auctioneer:
Skinner
Date:
2005-05-03
Ebony 12-inch Radius Octant by R.W.S. Stevens, Plymouth, with bone scale divided 0-100 , brass index arm with vernier (chipped), double-pinhole sight, mirror, adjustable magnifier Read more…
Auctioneer:
Skinner
Date:
2005-11-03
Ebony 13-inch Radius Octant by Norris & Co., London, with bone scale divided 95-0 , brass index arm with shaped read-out and clamp, bone finial Read more…
Auctioneer:
Skinner
Date:
2005-11-03
Ebony 13-inch Radius Octant by Spencer, Browning & Rust, London, with bone scale divided 0-95 , brass index arm with screw adjustment and clamp, pinhole, Read more…
Auctioneer:
Skinner
Date:
2005-05-03
10-inch Radius Ebony Octant by Spencer & Company, London, with bone maker's plaque marked Spencer & Co. London , scale calibrated 0-105, brass index arm Read more…
Auctioneer:
Skinner
Date:
2010-11-20
12-inch Radius Ebony Octant by Steel and Goddard, London, with bone scale calibrated 0-95, brass sliding index arm with read out and bone vernier, thunbscrew Read more…
Auctioneer:
Skinner
Date:
2009-07-25
10-inch Radius Ebony Octant by Spencer Browning & Company, London, with brass sliding index arm, bone scale divided 0-105, vernier scale indexed 0-20, thumb screw Read more…
Auctioneer:
Skinner
Date:
2009-07-25
Ten Inch Radius Ebony Octant by H. Hughes, London, the brass index arm with thumbscrew vernier adjustment, inset ivory scale calibrated 0-105 and vacant maker's Read more…
Auctioneer:
Skinner
Date:
2009-07-25
Ebony 13-inch Radius Vernier Octant by Spencer, Browning & Rust, with bone scale marked 0-95 and engraved with monogram SBR , oxidized brass index arm Read more…
Auctioneer:
Skinner
Date:
2005-05-03
Ebony Octant By Hughes, London, with ivory scale divided 100-0 by 10s, brass arm with vernier, pin hole, mirror and shades, radius 8 in., in Read more…
Auctioneer:
Skinner
Date:
2002-10-27
Ebony Octant by Spencer, Browning & Co., London, with brass index arm, ivory vernier, finial and scale engraved SBR , double pinhole and three shades, Read more…
Auctioneer:
Skinner
Date:
2004-09-11
