Box sextant by Cary of London, with a half inch diameter telescope, and demountable, with a fitted wooden case

Box sextant used in surveying, made in the first quarter of the nineteenth century and signed by Millar & Adie of Edinburgh

3" diameter box sextant in brass with silver scale but lacking telescopic sight, signed by Adie of Edinburgh, c. 1825

Box or pocket sextant, circular anodized brass plates, lid with bayonet fitting that fits on instrument back as handle, with leather carrying case, made for H.M. Government by Troughton & Simms of London, 1915

Box sextant, circular brass plates with lid (handle), silver scale, detached telescope, in fitted wooden box, by J Allan junior of London, c. 1825

Box sextant, circular black-lacquered brass plates and index arm, lid contains measurement table, in non-original 1918 brown leather carrying case, probably by Hall Brothers of Croydon, c. 1950

Box sextant, circular anodized brass plates with index arm and hinged arm with magnifier, lid (handle) with paper table, signed and made by Troughton and Simms Ltd of London, 1918

Box sextant, circular anodized brass plates with index arm and hinged arm with magnifier, lid (handle) with paper table, signed and made by Troughton and Simms Ltd of London, 1918