Master Compass Indicator, Flux Gate Compass System AN5752-2 Vulcan the glass and the inclinometer

the glass and the inclinometer with its fluid are intact

M6 periscopes in each late model Sherman

this example likely appeared in an aircraft of the US Navy

which may be a limiter or a trigger for a warning indicator

Master Compass Indicator, Flux Gate Compass System AN5752-2 Vulcan the glass and the inclinometerThe Master Compass Indicator AN5752 2 was an integral component of the WWII era Bendix Gyro Flux Gate Compass System used in aircraft such as the B 17, B 24, and B 29. The 7 component Flux Gate Compass system was designed to provide accurate navigational guidance using the earth's magnetic forces by minimizing interference from the systems of the aircraft, such as its turrets, guns, and engines. A flux gate gyro transmitter typically located within