Question

A Techometer is a device to measure​

Answer 1

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Tachometer, device for indicating the angular (rotary) speed of a rotating shaft.

Answer 2

Answer:

This is absolutely correct answer:

Explanation:

A tachometer refers to any device that produces a signal proportional to the speed of rotation of a joint. There are many different types of tachometers, some based on measuring the frequency of, or the time between, pulses generated by the rotating shaft.