Speedometer, M-4 Sherman Tank, #6208454 US Army A4 Skyhawk indicative of its experience

indicative of its experience

There are two electrical connectors

This is an example of an Autopilot Slaved Gyro Magnetic Compass

the unit indicated fuel quantity in four tanks: left

It is in very good condition given its age

Speedometer, M-4 Sherman Tank, #6208454 US Army A4 Skyhawk indicative of its experienceOk, yep, this isn't aeronautical, but it's certainly an interesting item nonetheless. Here is an example of a Speedometer of the type used in the WWII era US Army M 4 Sherman Medium Tank, made by the AC Spark Plug division of General Motors Corp. The US Army part number 6208454 and GMC part number AC1567470 appear on the face of the instrument. The 6208454 number is referenced by the Sherman tank's technical documentation illustration, see 2 photos in