Mahogany carrying case, for periscopic bubble aircraft sextant

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Mahogany carrying case, for periscopic bubble aircraft sextant
Science Museum Group
© The Board of Trustees of the Science Museum

Mahogany carrying case, for periscopic bubble aircraft sextant, Type 1A, No. 2053, by Kelvin and Hughes (Aviation) Limited, Barkingside, Essex, England, 1950-1951