Free Air Temperature Indicator, Direct Reading, Type C-13B WWII C-118 where headphones would likely have

where headphones would likely have been the preferred method of rendering audio to the crew)

HAYES G-3-217

The knob turns and the display rotates as it should

Only a few knobs function

B-47 Stratojet

Free Air Temperature Indicator, Direct Reading, Type C-13B WWII C-118 where headphones would likely haveThis is an authentic vintage Direct Reading Free Air Temperature Indicator Type C 13B, 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 70dC 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