A tachometer using solid state and/or vacuum tube circuitry.
NSN 6150-01-024-6926
NSN 6240-01-306-0069
NSN 5960-01-474-4843
NSN 5965-01-568-4103
NSN 6150-01-515-1444
NSN 5895-00-858-6853
NSN 5985-00-764-0833
NSN 6135-01-116-3385
NSN 5960-00-735-1100
NSN 5925-00-529-0441
NSN 6135-00-756-6149
NSN 5920-00-701-1200