A tachometer is an instrument that measures the rotation speed of a shaft or disk, displaying revolutions per minute (RPM) for motors and engines.
A tachometer (also known as a revolution-counter, tach, rev-counter, or RPM gauge) is an essential diagnostic and monitoring instrument used to measure the rotation speed of a shaft or disk. Widely used in automotive, marine, aerospace, and industrial settings, these devices indicate the revolutions per minute (RPM) of a motor or machine.
Whether using non-contact digital models or integrated automotive gauges, explore our database for user manuals, calibration instructions, and wiring diagrams for various types of tachometers.
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A tachometer measures the rotation speed of a shaft or disk, usually displaying the result in revolutions per minute (RPM) to help monitor engine and machinery performance.
It uses a laser to detect a piece of reflective tape placed on a rotating shaft, calculating the RPM based on the frequency at which the laser beam bounces back to the device's sensor.
Calibration procedures vary heavily by model, sensor type, and manufacturer. Please refer to your specific user manual or download one from our database for accurate calibration steps.
A tachometer measures the engine's RPM (revolutions per minute), while a speedometer measures the overall traveling speed of the vehicle (e.g., miles per hour or kilometers per hour).