Gyro Horizon Indicator, Mk IC, RAF, US Navy, NOS, Ref 6A/1649 PB2Y Coronado We know of no other

We know of no other aircraft that used this fuel indicator

it appears identical to the one illustrated in Robert Mikesh's book Japanese Aircraft Equipment 1940-1945

See photo of the cockpit of the F9F-5 from its flight manual dated 1955

made in England by Smiths Aircraft Instruments (part code 65 SFS)

The indicator provides directional and course information to the pilot as transmitted from the gyros mounted elsewhere within the aircraft

Gyro Horizon Indicator, Mk IC, RAF, US Navy, NOS, Ref 6A/1649 PB2Y Coronado We know of no otherHere is a WWII era Gyro Horizon Indicator, aka Artificial Horizon, Mark IC, Stores Ref 6A 1649, made by Sperry in 1944 (part number 650412), as used across various aircraft of the British Royal Air Force. It appears to be New Old Stock as the red protective paper disc over the vacuum filter is still in place. Common to the British version is the lack of a caging knob, whose purpose is instead fulfilled by a caging screw on the bottom of the case which