Temperature Indicator Type AN-5790-6: P-51, B-17, P-38, P-40, P-47 Constellation Here is a dual Tachometer

Here is a dual Tachometer for use in military helicopters

signaling to the Turret Trainer if the 'laying'

F-105 Thunderchief (see photo)

It is in good condition given its age

the C-1 Directional Gyro was used in versions of the Curtis P-40N Warhawk and Bell P-39N Airacobra Fighters and the A-30 Martin Baltimore light bomber

Temperature Indicator Type AN-5790-6: P-51, B-17, P-38, P-40, P-47 Constellation Here is a dual TachometerHere is an authentic WW2 vintage Temperature Indicator type AN 5790 6, as appeared in the WW2 Fighters P 51D Mustang, P 40 Warhawk, P 47 Thunderbolt, and P 38 Lightning, as well as Bombers B 17 Flying Fortress and B 26 Marauder, and various aircraft of the US Navy and Marines. Made by Hickok, it was used to measure coolant temperature, carburetor air temperature, or outside air temperature, and the label of those locations would be added directly to