No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 5975-00-951-7783
NSN 5925-01-464-2030
NSN 6620-01-112-6440
NSN 6105-01-551-1263
NSN 6620-01-441-0240
NSN 5985-00-981-8678
NSN 5930-01-422-3732
NSN 2925-00-536-4574
NSN 6130-00-135-0116
NSN 6320-01-488-5581
NSN 6150-00-802-5483
NSN 5935-00-633-8302