Radio Compass Indicator I-81-A Sparks of SCR-269-G and AN/ARN-7 F6F Hellcat This is the body of

This is the body of a Navigational Compass as used in aircraft of France

which were selected by rotating the center knob below the frequency band window

5 inches deep

The dial in the lower center is a stopwatch

Radio Compass Indicator I-81-A Sparks of SCR-269-G and AN/ARN-7 F6F Hellcat This is the body ofThe I 81 A Radio Compass Indicator (aka Pilot's Bearing Indicator) is a component of the Radio Compass SCR 269 G system (which evolved into the AN ARN 7), used during WWII. According to the Airborne Radio Equipment Handbook of the Air Service Command dated 1943, this system appeared in versions of the US Army Air Force bombers B 17, B 24, B 25, B 26, B 29, and transports C 46, C 47, and C 54, as well as in any models of these aircraft used by the US