.jpg?w=1)
细节
A late 19th Century 7in. radius vernier sextant by T.J. Williams
the polished brass frame with arc signed T.J. Williams, Cardiff, the inset silvered scale divided 2- 0- 150, vernier with clamp, fine screw adjustment and swivel magnifier, seven shades, two mirrors and day/night telescopes with turned fruit wood handel and fitted baize-lined box with securing hooks and carrying handle -- 11in. (28cm.) breadth
See illustration
the polished brass frame with arc signed T.J. Williams, Cardiff, the inset silvered scale divided 2- 0- 150, vernier with clamp, fine screw adjustment and swivel magnifier, seven shades, two mirrors and day/night telescopes with turned fruit wood handel and fitted baize-lined box with securing hooks and carrying handle -- 11in. (28cm.) breadth
See illustration