Oxygen Master Regulator Mark X, British RAF, 106D/24, For Parts or Repair SN7836 WW1 Our example is in excellent

Our example is in excellent condition given its age

azimuth and glide slope are both checked

and the middle ring has a hairline crack that does not affect operation

Here is an Omni-Bearing Selector 336A-2 as used in the 1950's era Collins Radio Navigation System VOR-102

Once the aircraft reaches 5000 Meters

Oxygen Master Regulator Mark X, British RAF, 106D/24, For Parts or Repair SN7836 WW1 Our example is in excellentThis 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