A tachometer that consists of indicator(s), generating transmitter(s), and the necessary connections.
NSN 5998-01-120-3282
NSN 5975-01-620-2339
NSN 6650-01-170-4397
NSN 5960-01-098-1170
NSN 6685-01-388-7236
NSN 5915-01-357-1785
NSN 6105-01-156-6873
NSN 5835-01-351-8429
NSN 4140-01-363-7379
NSN 5925-00-502-9276
NSN 6150-00-400-6366
NSN 6240-00-499-6278