Tachometers are used to measure the velocity of a rotating object. They operate on the principle that a driven motor (i.e., a motor operated as a generator) produces a voltage that is proportional to the angular velocity of the motor shaft.
Work SMARTER,Not Harder! Testo specializes in portable instruments to measure physical and chemical values. Such instruments have to withstand harsh environments, extreme temperatures, high humidity, dust, etc. With more than a million instruments sold Testo knows all the pitfalls of daily,... (more)
