細節
A late 19th Century oxidised brass sextant
signed on the arc Heath & Co. Ld. Crayford London S.E. and further engraved M.L. Clarke R.N., the 'bell' pattern frame with seven shades, mirrors, adjustable telescope mounting, the index arm, 6 5/8in. (16.8cm.) radius with vernier magnifier and tangent screw adjustment, rosewood handle, in mahogany case with three telescopes and trade label for George Lee & Son -- 10½in. (26.7cm.) wide
signed on the arc Heath & Co. Ld. Crayford London S.E. and further engraved M.L. Clarke R.N., the 'bell' pattern frame with seven shades, mirrors, adjustable telescope mounting, the index arm, 6 5/8in. (16.8cm.) radius with vernier magnifier and tangent screw adjustment, rosewood handle, in mahogany case with three telescopes and trade label for George Lee & Son -- 10½in. (26.7cm.) wide