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Octant - ebony "T" frame supporting the large inlaid ivory arc scale. The scale is graduated every 20 minutes from -3° to +109° and read by vernier with tangent screw to single minutes of arc. Reinforced brass index arm, two horizon mirrors, three rectangular sun shades, one round horizon shade and a peep hole. The ivory plate on the crossbar inscription reads "SPENCER, BARRETT & CO LONDON."
It is fitted into the original keystone box made of oak, complete with the original key lock with inlaid brass key escutcheons along with hook and eye closure. The box measures 13 3/4 inches long (center of arch) by 12 inches wide and 4 inches thick. Missing a section of the upper right hand front corner of top, and the same on bottom. Sunbleached oak patina.
OCTANT MEASUREMENTS:m radius: 9 3/4 in; 24.765 cm overall: 12 in x 9 7/8 in x 3 3/16 in.
From the Edward L. Greenwood Maritime Collection
Dealers of nautical antiques and collectibles, marine art, lamps, lighting, ship salvage and hardware, Skipjack sells quality nautical furniture and furnishings, marine instruments, model boats, nautical gifts and decor. Skipjack’s Marine Art Gallery features marine paintings, sculptures, ship models and folk art featuring mermaids, whales, fish and fowl.