Altimeter, Mk XVIIA, Ref 6A/1538 0-35,000ft, British Royal Air Force C-121 was made by RC Allen

was made by RC Allen

For dual-control installations

This Soviet/Russian aircraft instrument appears to be for setting an airspeed between 70-220 kilometers per hour

15 Jewels)

Altimeter, Mk XVIIA, Ref 6A/1538 0-35,000ft, British Royal Air Force C-121 was made by RC AllenHere is a British Altimeter Mk XVIIA, Rf 6a 1538 as used in WW2 RAF bombers such as the Avro Lancaster, showing a maximum altitude of 35,000 ft. The altimeter has the marking of ICAN, the International Commission for Air Navigation. ICAN was an international governing body established on the basis of the ICAO relating to the regulation of aerial navigation and dealt exclusively with the regulation of international air navigation and in particular