Compass, Magnetic Direct Reading, US Navy Mark IX Carvair The caging knob pulls out

The caging knob pulls out and turns to cage the gyro as it should

one in the driver’s hatch that rotated

Measures ~3

12 April 1957

Compass, Magnetic Direct Reading, US Navy Mark IX Carvair The caging knob pulls outHere is an example of the WWII era US Navy Aircraft Direct Reading Magnetic Compass Mark IX, as used in the seaplanes PBY Catalina and PBM Mariner Patrol Bombers. The compass was illuminated electrically via bulb mounted in a small compartment over the compass itself. Inside the same compartment is access to the direction compensating screws, used to calibrate the compass. This example is in reasonable condition for its age. The fluid is absent.