Aircraft bubble sextant.

Made:
1947-1952 in Barkingside
maker:
Kelvin and Hughes Limited
Bubble sextant made by Kelvin Hughes Ltd, London, about 1950

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Bubble sextant made by Kelvin Hughes Ltd, London, about 1950
Science Museum Group
© The Board of Trustees of the Science Museum

Bubble sextant made by Kelvin Hughes Ltd, London, about 1950. Marked on a plate on the left side of the casing: Bubble Sextant | Mark IX BM | Kelvin Hughes Ltd | London | Brit. Pats. | 480112 490621 | and pending | V.2126. Marked on the left side of the casing: N° 3843. Scale from 0° to 80° every 1°. Vernier to 1'. Black crackle-lacquered alloy casing incorporating artificial materials, housing optical equipment, a clockwork averaging mechanism, electrical equipment, and two rubber eyecups. Three shades (all red). In a fitted Bakelite case with a leather carrying strap.

(ex "Navigation Today" exhibition number: N.T.E.73)

Details

Category:
Navigation
Object Number:
1955-168
Materials:
bakelite, leather, metal, glass and wood
Measurements:
in case: 270 mm x 200 mm x 245 mm,
type:
bubble sexant and aircraft sextant
credit:
Kelvin Hughes Limited