A late 19th century naval sextant by J. Coombes of Devonport. Circa 1895.
6 ½ inch radius, lacquered brass three circle frame with beach wood handle.
Brass limb with inlaid silver scale -5° to 160°, silver vernier to 10".
Four grey shades and three grey horizon shades.
80mm magnifier on swivel arm, with frosted glass shade.
In square mahogany case with key.
Case dimensions: Width: 26.5 cm. Depth: 25.5 cm. Height: 12 cm.
Index arm engraved: H F Baker
Numbered on limb: 11195
For a similar sextant see the collection of the National Maritime Museum, Object ID: NAV1152. and Sextants at Greenwich, W. F. J Mörzer Bruyns, Richard Dunn, National Maritime Museum, 2009. Page 208.
Coombes were optical and scientific instrument makers at ‘The Observatory’, Fore Street in Devonport, established 1806. They manufactured sextants for the Royal Navy and the Britannia Royal Naval College.