Details
A late 19th-Century vernier octant signed Harris Thomas & Co. Ltd, Middlesbro
constructed in polished brass, the silvered scale divided 5°- 0°- 120°, the vernier with clamp and fine tangent adjustment screws with swivel magnifier, six shades, two mirrors, two telescopes, mahogany handle and brass pin feet, in fitted box with accessories and brass plate on lid engraved R.H., the radius -- 8in. (20.3cm.); the box -- 10¾ x 9¾in. (27.5 x 25cm.)
See illustration
constructed in polished brass, the silvered scale divided 5°- 0°- 120°, the vernier with clamp and fine tangent adjustment screws with swivel magnifier, six shades, two mirrors, two telescopes, mahogany handle and brass pin feet, in fitted box with accessories and brass plate on lid engraved R.H., the radius -- 8in. (20.3cm.); the box -- 10¾ x 9¾in. (27.5 x 25cm.)
See illustration