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Aircraft bubble sextant.

1947-1952

Mahogany carrying case, for periscopic bubble aircraft sextant: Type 1A, No. 2053

1950-1951

Periscopic bubble aircraft sextant, Type 1A, No. 2053, by Kelvin and Hughes (Aviation) Limited, Barkingside, Essex, England, 1950-1951. The periscopic bubble aircraft sextant was used on the De-Havilland Comet passenger jet aircraft.

Periscopic bubble aircraft sextant: Type 1A, No. 2053

1950-1951

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

Case, square pyramid shaped, for periscopic bubble aircraft sextant, Type 1A, No. 2053

1950-1951

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

Mount, for Periscopic bubble aircraft sextant: Type 1A, No. 2053

1950-1951

Cardboard box, internally padded to fit upper half of steel carrying case, for periscopic bubble aircraft sextant, Type 1A, No. 2053, by Kelvin and Hughes (Aviation) Limited, Barkingside, Essex, England, 1950-1951

Cardboard box, to fit upper half of steel carrying case, for periscopic bubble aircraft sextant

1950-1951

Cardboard box – inscribed with: ‘Comet Sextant’ - to fit over upper and lower internally padded cardboard boxes, for periscopic bubble aircraft sextant, Type 1A, No. 2053, by Kelvin and Hughes (Aviation) Limited, Barkingside, Essex, England, 1950-1951

Cardboard box, to fit over internally padded cardboard boxes, for periscopic bubble aircraft sextant

1950-1951

Cardboard box - with attached leather straps - internally padded to fit lower half of steel carrying case, for periscopic bubble aircraft sextant, Type 1A, No. 2053, by Kelvin and Hughes (Aviation) Limited, Barkingside, Essex, England, 1950-1951

Cardboard box, to fit lower half of steel carrying case, for periscopic bubble aircraft sextant

1950-1951