A CARY & CO. CASED SEXTANT

Late 19th Century
A brass and black sextant inscribed 'Cary, London' and 'G.O. Stephenson R.N' to the arch, with additional lenses, within a mahogany case with certificates of inspection affixed to the interior from, probably, The National Physical Laboratory dated 1893 and The 'Hezzanith' Instrument Works dated 1939, the case 25cm wide