Radio Transmitter BC-459-A, of US Army Air Force & Navy SCR-274N, AN/ARC-5 Command Sets B-57 see photo from its flight

see photo from its flight manual dated 1944 showing the indicator

contains an elevator potentiometer and a gear train which were the interface between the commands given by the action of the stick and the downstream C-1 system

and displays the direction on a vertically-mounted compass card

The temp reading is inaccurate

Radio Transmitter BC-459-A, of US Army Air Force & Navy SCR-274N, AN/ARC-5 Command Sets B-57 see photo from its flightThe BC 459 A Radio Transmitter was part of the WWII era US Army Air Force's SCR 274N "Command Set" (also used in the US Navy's ATA ARA and the later AN ARC 5 communication system where it was designated T 22 ARC 5). Frequency range is 7 9. 1 MHz. According to the Airborne Radio Equipment Manual of the Signal Section Air Service Command Dated April 1943, the SCR 274N was used in bombers B 17, B 24, B 25, B 26, and A 20, fighters P 38, P 39, P 40, and P