Oxygen Master Regulator Mark X, British RAF, 106D/24 Lily Bomber can send the Rebecca operator

can send the Rebecca operator a coded message by depressing a key provided for that purpose

Used in most US bombers during WW2

type AN-5825-7

Very similar to the Askania FI22306 circa 1936

Oxygen Master Regulator Mark X, British RAF, 106D/24 Lily Bomber can send the Rebecca operatorThis WWII era Oxygen Master Regulator Mark X was used in large bomber aircraft of the British Royal Air Force and Royal Canadian Air Force, such as the Avro Lancaster. The Mk X regulator was for a high pressure continuous flow oxygen system and allowed the pilot to control the flow of oxygen centrally for up to 8 crewmen. The left hand knob controlled the flow of oxygen, which would be displayed on the ALT gauge. The flow was to be set to match the