Features:
The Tachometer is one of necessary instruments in mechanical field, and used to measure electrical machinery's rotational speed, the link speed or the frequency.
It is Commonly used in electrical machinery, electric fan, papermaking, plastic, chemical fiber, washer, automobile, airplane, steamboat, manufacturing industries and so on.
What is mostly commonly used is the hand-hold centrifugal tachometer.
The Tachometer is essential in national economy's each domain.
A tachometer (RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine.
The device usually displays the revolutions per minute (RPM) on a digital displays.

Specifications:
Measuring Range: Rotate: 0.5~19999RPM; Linear: 0.05~19999.9m/min, 0.2~6560ft/min;
Rotating Speed Resolution: 0.1RPM(0.5~999.9RPM); 1RPM(Over1000RPM);
Linear Rolling Speed Resolution: 0.01m/min�0.05~99.99m/min); 0.1m/min(over 100m/min); 0.1ft(0.1~999.9ft/min); 1ft(over 100ft/min);
Accuracy: ±ďĽ�0.05%+1digits);
Sampling Time: 0.8 sec(over 60RPM);
Max&Min Measuring;
Data Storage;
Memories Clear;
Range Selection:Auto;
Battery Indication.