A 19th Century Octant**
Spencer Browning & Rust, London; circa 1860
an ebony frame with inlaid ivory scales divided in 5o intervals from -5o to 135o, a brass arm with thumb screw adjuster, maker's plate on the crossbar, with three brass feet, three and four filters/shades, pin hole sight with two additional sighting lenses, all in a mahogany keystone box. On the inside cover of the box is a label from H. Duren - Nautical Instrument Manufacturer, New York.
12¼ x 14 in. (31.1 x 35.6 cm.) box dimensions.
A 19th Century Octant**
Spencer Browning & Rust, London; circa 1860
an ebony frame with inlaid ivory scales divided in 5o intervals from -5o to 135o, a brass arm with thumb screw adjuster, maker's plate on the crossbar, with three brass feet, three and four filters/shades, pin hole sight with two additional sighting lenses, all in a mahogany keystone box. On the inside cover of the box is a label from H. Duren - Nautical Instrument Manufacturer, New York.
12¼ x 14 in. (31.1 x 35.6 cm.) box dimensions.
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