Applications& 65306; Used for measuring periodic motion, to check the imbalance and deflecting of moving machinery. Specifically designed for present measuring various mechanical vibration. So as to provide the data for the quality control, run time and equipment upkeep. * VM-6380 can shown 3 same parameters in one display for 3 dimensional measurement. * VM-6370 can display the parameters of Displacement,Velocity and Acceleration simultaneously.  Features: * With the detection of 3 Dimensions, 3D Vibration Meter VM-6380 is the most scientific, comprehensive Vibration Meter in vibration detection field. * In accordance with ISO 2954, used for periodic measurements, to detect out-of-balance, misalignment and other mechanical faults in rotating machines. * Specially designed for easy on site vibration measurement of all rotating machinery for quality control, commissioning, and predictive maintenance purposes. * Individual high quality accelerometer for accurate and repeatable measurements. * Wide frequency range (10Hz~10kHz) in acceleration mode. * Optional headphones for use as electronic stethoscope. * Use RS-232 data output to connect with PC. * Provide Bluetooth data output choice. Specifications:                Sensor                 Piezoelectric Transducer                     Measuring Range                 Acceleration                 0.1m/s²~400m/s² 0.3ft/s²~1312ft/s² 0.0g~40g Equivalent Peak                     Velocity                 0.01mm/s~400mm/s 0.004inch/s~16.0inch/sTrue RMS                     Displacement                 0.001mm~4.0 mm 0.04mil~160.