Pen Vibration Meter, Extech, Mfr#: VB400

Vibration Meter, Accuracy +/-5 Percent of Reading + 2 Digits, Acceleration Measurement – Minimum 1 ft/sq sec, Acceleration Measurement – Maximum 656 ft/sq sec, Maximum Velocity Measured 7.87 in/sec, Minimum Velocity Measured 0.02 in/sec, Acceleration Max Resolution 1 ft/sq sec, Velocity Max Resolution 0.02 in/sec, Batteries Included Yes, Alert Type Vibration, Battery Size AAA, Battery Voltage 1.5V, Number of Batteries Required 4, Digital Display Screen Type LCD, Manufacturer Warranty Length 2 yr