Split Type Handheld Digital Electric Torque Meter Tester HDP-50 Torsion Wrench Screw Tester, KGf.cm: 0.5~50.0, N.m: 0.05~5.00, lbf.in: 0.5~45.0 for Screwdriver
Sonic Belt Tension Meter Tester Belt Tension Measuring Gauge with Range 10Hz-680Hz Detachable Probe for Measure How Often a Drive Belt Vibrates When It Hits or Moves Quickly
Solid Density Meter Soild Densimeter Measuring Densitometer for Materials Like Rubber Plastic with RS-232 Interface of Maximum Weight 300g Density Resolution 0.001 g/cm3