No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 6145-01-461-9282
NSN 5935-00-260-0516
NSN 5985-00-506-5928
NSN 6220-01-298-6836
NSN 6650-00-259-2605
NSN 5915-01-422-2014
NSN 2925-00-740-7029
NSN 6685-01-202-0704
NSN 6320-01-342-7548
NSN 5998-01-178-1166
NSN 5925-01-254-5905
NSN 6610-00-435-8932