Radio Control Box BC-450A for SCR-274 Radio Set (with replacement crank) US Coast Guard 5 inches diameter by ~4

5 inches diameter by ~4

to indicate the gross flow (not the precise rate) of oxygen from the primary oxygen tanks (not portables) to the local junction at each station

made by Liquidometer PN EA-308-1

one near the loader

From SURVEY OF SELF-CONTAINED NAVIGATION SYSTEMS W

Radio Control Box BC-450A for SCR-274 Radio Set (with replacement crank) US Coast Guard 5 inches diameter by ~4Here 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