World's patent, Multi-functions
Laser light beam for photo tachometer, long measuring distance up to 100 cm at least.
Wide measuring range from 0.5 to 100,000 RPM
0.1 RPM resolution for the measured value < 1000 RPM
The last value, max., value, min. value will be stored into the memory automatically & can be obtained by pressing MEMORY CALL BUTTON.