Free Air Temperature Indicator, Direct Reading, Type C-13A WWII AT-6 and the other for Outside

and the other for Outside pressure/altitude

The markings are clear and the glass and case are intact

It is clearly experienced but in good condition given its age

The E-13 Tachometer was used in various US fighter aircraft

was made by RC Allen

Free Air Temperature Indicator, Direct Reading, Type C-13A WWII AT-6 and the other for OutsideThis is an authentic vintage Direct Reading Free Air Temperature Indicator Type C 13A, as used in Bombers Boeing B 17 Flying Fortress and Consolidated B 24 Liberator, plus Transport Douglas C 47 Skytrain and others. The instrument indicated to the pilot the aircraft's external air temperature from 60dC to +50dC in aircraft of the Air Force US Army, and would have its stem installed from the cockpit or the bombardier's compartment thru the skin or the