Radio Compass Indicator I-81-A of SCR-269-G and AN/ARN-7 Bf-109 equipped with twin J-34 engines

equipped with twin J-34 engines

The center knob rotates a flexible shaft connected to a rotatable loop antenna

Used for sighting 3"/50 guns

an exceptional example indeed

This is an original WWII-era handbook Identification of Aircraft for Army Air Force Ground Observer Corps was prepared by the US Army Air Force to train ground observers on aircraft recognition skills

Radio Compass Indicator I-81-A of SCR-269-G and AN/ARN-7 Bf-109 equipped with twin J-34 enginesThe 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