Features: Used for measuring periodic motion, to check the imbalance and deflecting of moving machinery.Is specifically designed for present measuring various mechanical vibration. So as to provide the data for the quality control, run time and equipment upkeep. It use the high-performance acceleration meter, realize the repetitiveness and accurate measurement.It has the function of testing axle bearing situation. Vibration meter(also called also called vibration severity) uses Piezoelectric Acceleration Transducer transfer the vibration signal in to electrical signal, analyze the input signals, and show the Acceleration, speed, of the vibration. It is widely used in the lines of Power, petrochemical, machinery manufacturing, metallurgy, vehicles, etc. Multifunctional, with Temperature Measurement, Auto Switch Range, Backlight, Auto Power off. Specification: Vibration Pickup:Piezoelectric Ceramic Accelerometer(shear-type) Acceleration:0.1~199.9m/s² Velocity:0.1~199.9m/s Displacement:0.001~1.999mm Acceleration Frequency Range: 10HZ~1KHZ(LO); 1KHZ~15KHZ(HI) Velocity Frequency Range:10HZ~1KHZ Displacement Frequency Range:10HZ~1KHZ Accuracy:±5%H±2digits Power: 9VDC battery（not included） Size:70 * 35 * 100mm / 2.8 * 1.4 * 3.9in Weight: 1000 g / 35.3 oz(approx.) Package list: 1 x Vibration Analyzer Tester（battery not included） 1 x instructions 3 x probe 1 x Aluminum case 1 x Split probe