细节
An early 20th-Century vernier sextant by Heath & Co.
the polished brass lattice frame with silvered scale divided 5°- 0°- 155°, automatic clamp with fine screw adjustment and swivel magnifier, seven shades, two mirrors, telescope and wooden handle, contained in a fitted wooden box with accessories and test certificate for 1924 in lid, the index -- 8in. (20cm.); the box -- 12 x 11½in. (30.5 x 29cm.) securing hooks and carrying handle; with two small hand held compasses and a small six-draw telescope signed Thos. Harris & Son -- 15in. (38cm.)
See illustration (part) (4)
the polished brass lattice frame with silvered scale divided 5°- 0°- 155°, automatic clamp with fine screw adjustment and swivel magnifier, seven shades, two mirrors, telescope and wooden handle, contained in a fitted wooden box with accessories and test certificate for 1924 in lid, the index -- 8in. (20cm.); the box -- 12 x 11½in. (30.5 x 29cm.) securing hooks and carrying handle; with two small hand held compasses and a small six-draw telescope signed Thos. Harris & Son -- 15in. (38cm.)
See illustration (part) (4)