Wide Frequency Vibration Meter with Displacement, Velocity and Acceleration Measurements. The VB450 is a convenient compact sized Vibration Meter which measures vibration levels in industrial machinery. Misalignment, poor balancing, structural compromises, and other factors can cause unwanted vibration increases. VB450 features a wide 10Hz to 1500Hz frequency range and provides Displacement, Velocity, and Acceleration measurement. Complete with remote sensor, magnetic mount, 9V battery, wrist strap, and soft case.