Radio Transmitter BC-459-A, of US Army Air Force & Navy SCR-274N, AN/ARC-5 Command Sets B-57 and the left hand switch

and the left hand switch reverses course 180 degrees

An exceptional find

all for the elimination of errors caused by magnetism

We've been told that this was used in a version of the F4F Wildcat fighter

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

Radio Transmitter BC-459-A, of US Army Air Force & Navy SCR-274N, AN/ARC-5 Command Sets B-57 and the left hand switchThe 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