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细节
An early 20th Century 7in. lattice framed vernier sextant (unsigned)
the oxcidised brass frame with inset silvered scale divided 5- 0- 150, fine tangent screw adjustment to vernier, swivel magnifier, seven shades, two mirrors, telescope and ebony handle, is in fitted box with accessories and test certificate datd 1917, carrying handle and securing hooks -- 11.3/8in. (29cm.)
See illustration
the oxcidised brass frame with inset silvered scale divided 5- 0- 150, fine tangent screw adjustment to vernier, swivel magnifier, seven shades, two mirrors, telescope and ebony handle, is in fitted box with accessories and test certificate datd 1917, carrying handle and securing hooks -- 11.3/8in. (29cm.)
See illustration