a black-enamelled brass sextant
The three-circle frame with adjustable telescope mounting socket, seven shades and mirrors, the index arm with vernier and magnifier and tangent-screw fine adjustment, the arc engraved G DE KONINGH ARNHEM AMSTERDAM No 3286, with accessories - in mahogany case
28cm. wide
a black-enamelled brass sextant
The three-circle frame with adjustable telescope mounting socket, seven shades and mirrors, the index arm with vernier and magnifier and tangent-screw fine adjustment, the arc engraved G DE KONINGH ARNHEM AMSTERDAM No 3286, with accessories - in mahogany case
28cm. wide
