Radio Compass Indicator, I-82-A, of SCR-280-A & AN/ARN-7 System, Signal Corps US Army Allison Here are two types of

Here are two types of aircraft Pelorus Drift Sight

The dial markings and paint on the pointers have aged

See the spec sheet in the photo gallery from the Index of Army Aeronautical equipment Volume 6 Instruments

Measures 5

Radio Compass Indicator, I-82-A, of SCR-280-A & AN/ARN-7 System, Signal Corps US Army Allison Here are two types ofThe Navigator's Radio Compass Indicator, I 82 A, was a component of the SCR 280 A and the AN ARN 7 Radio Compass System. These systems were used in versions of the WWII era Air Corps US Army Douglas C 47 Skytrain transport, according to the US Air Service Command's Airborne Radio Equipment Handbook dated 1943, and in US Army Air Force bombers B 17, B 24, B 25, and B 26. The radio compass, receiving ground signal from a selected transmitter via its