Features: â— Vibration measuring pen is an ultra-small vibration measuring instrument â— It can measure three parameters of vibration acceleration, speed and displacement â— Lightweight and small, easy to carry â— Using metal shell, excellent anti-interference performance â— Can measure imbalance, Mechanical vibration caused by misalignment, looseness, bearing gear failure, etc. â— Keep the measured value for 40 seconds â— Automatically shut off for 40 seconds â— For measuring acceleration, velocity and displacement