Question

What means tachometer

Answer 1

Answer:

Tachometer is an instrument used for measuring the rotation or revolution speed of objects, such as an engine or a shaft. The tachometer measures revolutions per minute (RPMs) of engines and is widely used in automobiles, airplanes, marine engineering field and many others.

Answer 2

Answer:

instrument which measures the working speed of an engine (especially in a road vehicle), typically in revolutions per minute.