A Tachometer measures the rotation speed of a shaft or disk, typically in revolutions per minute (RPM). Tachometers work using the electromagnetic induction theory. A sensor or pickup coil, a magnet, and a display mechanism make up the tachometer.

Attributes:
• Prevents damage to machines by ensuring that they do not exceed their maximum speed
• Manufactured to precise specifications and is durable and reliable

Applications:
A Tachometer is used for measuring the rotational speed of machines and engines, providing accurate and reliable measurements for optimal performance and maintenance.