Vibration Meter Acceleration Range 656ft/s2 200m/s2 20.39g Frequency Range (Hz) 10 to 1 kHz Temp Range (F) 14 Degrees to 140 Degrees Velocity 0.5 to 199.9mm/s 0.05 to 19.99cm/s 0.02 to 7.87in/s Bearing/Gear Check Yes +/-(5 Percent + 2 Digits) Accuracy Yes Data Hold Display LCD Auto Power Off Yes Special Features RMS Peak Hold and Max/Min Record Metric or Imperial Measurement Units (6) AA Calibration Certificate No