Features:
Individual high-quality accelerometer for accurate and repeatable measurement.  
Used for periodic measurements, to detect out-of-balance, misalignment and other mechanical faults in rotating machines. 
Acceleration, velocity and displacement measurements. 
Sturdy metal body for rugged operation. 
Wide frequency range in acceleration mode. 
RPM and frequency measurements. 
Backlit LCD display.

Applications:
A vibration meter is used in manufacturing for machine condition monitoring, product testing and quality assurance. A vibration meter also can be used in civil engineering to measure the vibration of structures such as buildings, roads and bridges.  

Measuring principle:
Vibration Meter employs a piezoelectric transducer to measure vibrations of a material and displays it in one or more of displacement, velocity or acceleration values for analyzing.