No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 6150-01-037-5528
NSN 5905-01-459-7797
NSN 5996-01-325-1664
NSN 6130-00-518-1884
NSN 6105-00-956-9442
NSN 2925-01-318-8853
NSN 5915-00-462-2878
NSN 5960-01-067-3156
NSN 5960-01-114-0197
NSN 5930-01-591-4955
NSN 6620-00-530-3939
NSN 5998-00-939-3189