No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 5999-01-023-0216
NSN 5935-01-592-2358
NSN 2925-00-999-8967
NSN 5975-00-943-6309
NSN 5910-01-314-2321
NSN 5920-01-535-6498
NSN 6105-01-031-9638
NSN 6105-00-928-4092
NSN 5930-01-203-1282
NSN 5915-01-124-9347
NSN 5920-01-410-7740
NSN 5960-01-573-6483