H-48-34-.5315 ID-0.2812
US$ 28.09
Sextant, Aircraft Periscopic, RAF Mk IIB, Ref No 6B/2838 Hughes The cover is a thick
$95.00
Description
The cover is a thick index card stock which covers 55 pages
It may be some sort of a stall warning instrument
It has a date stamp of July 1960
We do not have corroborating information
The bottom knob controlled the turn
Sextant, Aircraft Periscopic, RAF Mk IIB, Ref No 6B/2838 Hughes The cover is a thickHere is an original aircraft Periscopic Sextant Mk IIB as used in aircraft of the British Royal Air Force, in its original carrying case. The periscopic sextant was used in aircraft with a pressurized cabin, whereas the 'periscope' was inserted through a shutter mounted in the ceiling of the aircraft. This provided an unobstructed view of the sky for celestial navigation without compromising the pressurization of the crew cabin. The serial number of
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