Radio Control Box BC-450A for SCR-274 Airborne Radio Set US Army it make sense that this

it make sense that this may have been specified for helicopters

The bakelite on/off knob is broken but can be glued

According to the US Army Air Force Maintenance Interchangeability Cross Reference Chart dated Dec 1943

If you have a Drift Sight Head in your collection

made by the Bulova Watch Company

Radio Control Box BC-450A for SCR-274 Airborne Radio Set US Army it make sense that thisHere is an authentic WWII era Radio Control Box BC 450A was a component of the SCR 274 N command radio set as used in aircraft of the US Army Air Force and US Navy such as heavy bombers B 17, B 24, and B 29 and medium bombers B 25 and B 26. SCR 274 was a multi channel, multi component aircraft radio receiving and transmitting system (see 2 page description in photo gallery). The BC 450 provided the pilot with remote control of 3 radio receivers. This