Self powered
A tachometer using solid state and/or vacuum tube circuitry.
NSN 5855-00-167-7893
NSN 5855-00-132-1007
NSN 6105-00-112-0967
NSN 5950-00-149-3059
NSN 5855-00-411-8688
NSN 5895-01-362-1391
NSN 6240-01-167-5979
NSN 2925-01-142-0981
NSN 6105-01-593-0045
NSN 6650-01-348-7418
NSN 6105-01-318-4258
NSN 5996-00-003-3559