Sextant, Aircraft Periscopic, RAF Mk II, Ref No 6B/2838 KC-135

Sextant, Aircraft Periscopic, RAF Mk II, Ref No 6B/2838 KC-135Here is an original aircraft Periscopic Sextant Mk II 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

See image of spec sheet

which is usually simple to do

The face is embossed BU AERO US NAVY (i

2 inch by 7-inch wide negatives in 120-type film

It can be said that a compass of the G

made by Weston

or very similar to

Interested buyers

It has a screw-type heeling compensator

This is an original WWII-era training booklet published by the US Navy's Aviation Training Division in 1942

It is number eight in the Fixed Gunnery and Combat Tactics series

Here is a very interesting document