Radio Compass Indicator, I-82-A, of SCR-280-A & AN/ARN-7 System, Signal Corps US Army Allison Setting Knob

Setting Knob

but we have found it in the flight manual of the F-94C Starfire Fighter dated 1957

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

Measures 5

but doesn't affect the cosmetic appearance and could be replaced

Radio Compass Indicator, I-82-A, of SCR-280-A & AN/ARN-7 System, Signal Corps US Army Allison Setting KnobThe 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