Tachometer

Automotive Technology

A tachometer is a measuring instrument and vehicle component that measures the rotation speed of a shaft or disk, such as in a motor or other machine. It usually shows revolutions per minute on a calibrated analogue dial, although digital displays are increasingly common. The term derives from Ancient Greek words for “speed” and “measure”. In automotive use, it conventionally refers to engine revolutions, while a speedometer refers to vehicle speed.

Measures: Rotation speed of a shaft or disk
Typical display: Revolutions per minute (RPM)
Word origin: Ancient Greek words for speed and measure

Sources and credits

Article: Tachometer (English Wikipedia)
Wikidata: Q206976
Text: Card text is adapted from the English Wikipedia article by an automated summary. Wikipedia content is available under CC BY-SA 4.0; see the article history for its contributors. CC BY-SA 4.0 · Article history and contributors
Illustration: By Greg L. Wright - SnapJag. CC BY 2.5 · File page on Wikimedia Commons
Greg L. Wright - SnapJag, Own work
Modifications: Resized and converted to WebP
Popularity: 138 median daily views (Wikimedia Pageviews API (all-access, user agent))

Kosmora is not affiliated with or endorsed by the Wikimedia Foundation.