Altimeter, Sensitive AN-5760-T2A USAF 1949 AT-6 The knobs turn and the

The knobs turn and the scope rotates in its base when installed as intended

This hardback but expandable book shows the wear expected from a 70+ year old manual

The problem with using this indicator was not only identifying the aircraft

becoming the F-86L Sabre Interceptor aircraft of the US Air Force

and night fighter P-61 Black Widow used this indicator

Altimeter, Sensitive AN-5760-T2A USAF 1949 AT-6 The knobs turn and theHere is a post WWII Sensitive Altimeter AN 5760 T2A made by Kollsman, part number 671CPU 19 D15. It is specifically labeled for use in aircraft of the US Air Force, and has a serial number prefix of "USAF 49", evidence of a year of manufacture of 1949. USAF aircraft that used the AN 5760 altimeter during this period were fighters (P)F 51 Mustang and (P)F 80 Shooting Star jet aircraft. This altimeter is stamped on the back with "B 50", so theoretically