A tachometer designed to be held in the hand and whose spindle is driven by manually pressing it to the rotating object.
NSN 5915-00-241-9614
NSN 6650-01-657-1395
NSN 5935-01-319-0418
NSN 5915-01-146-5543
NSN 6610-01-171-0319
NSN 6130-01-532-5060
NSN 5915-00-866-9998
NSN 5998-00-633-0572
NSN 5950-00-734-3990
NSN 5975-01-306-6236
NSN 6650-00-754-2276
NSN 6135-00-505-0679