A tachometer is an instrument used to measure the rotational speed of a machine shaft, motor, engine, or rotating equipment, usually in revolutions per minute (RPM). It can be digital or analog and is commonly used in automotive, industrial, and mechanical applications to monitor machine performance and operating speed.
Operation:
The tachometer operates by detecting the rotation of a shaft or moving part using mechanical contact, magnetic sensors, or optical sensors. The device calculates the rotational speed and displays the reading in RPM on the screen or dial. Operators use the measurements to monitor, control, and maintain proper machine or engine performance.
