A tachometer designed to be held in the hand and whose spindle is driven by manually pressing it to the rotating object.
NSN 5920-01-160-4351
NSN 5965-01-525-0893
NSN 5910-00-847-3955
NSN 5990-00-583-9920
NSN 5915-00-569-7409
NSN 5960-01-084-7381
NSN 5945-00-825-9520
NSN 6150-00-521-1257
NSN 6650-00-331-2232
NSN 5996-00-166-7402
NSN 4140-01-634-0330
NSN 5960-01-279-2589