No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 5835-01-502-9228
NSN 6220-00-737-0869
NSN 6610-01-149-1465
NSN 5920-01-085-2234
NSN 5985-01-386-0452
NSN 5935-01-481-4103
NSN 6220-01-284-6347
NSN 6645-01-242-9699
NSN 6135-01-151-2705
NSN 5998-00-259-3059
NSN 6645-00-729-9900
NSN 6110-01-526-2487