651302 TACHOMETER HAND HORN TYPE, 100-4000RPM

This tachometer indicates speed instantaneously and therefore enables speed fluctuations to be read off the dial. A circumference disc is provided to measure the circumference speed. 10 revolutions of this disc is equal to 1 mtr. So by dividing the number indicated on the gauge by 10, you can determine the number of revolutions per minute. When ordering, indicate the RPM capacity from the list below.