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Air Ministry Bubble Sextant 1942
Air Ministry ,, Bubble Sextant, in its original outer case , case is made from a kind of bakelite, dated 1942, comes with its original leather handle, somewhat worn handle,
this is the Mark 9 version , two chromed clips to the top of the case., inside the main sextant, everything seems to work and has seen a fair bit of service as worn in places. There are some extra pieces inside, but a couple of bits are missing.
Air Ministry Bubble Sextant
This instrument, introduced in 1938 and widely used by the Royal Air Force during World War II, is a modification of the Booth sextant designed by the British Royal Aircraft Establishment in 1918. Its most important new feature is a mechanical device that gives the navigator the average value of 60 observations taken over the course of two minutes. It was probably made by Hughes & Son, Ltd., of London. “A.M.” refers to Air Ministry. P.V.H. Weems donated this example to the Smithsonian in 1963