Need help? Tachometers for every application - whether you need a compact, handheld model or a feature-rich solution, discover the right tool to measure RPM with accuracy.

A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. [1]

Aug 19, 2012 · The meaning of TACH is tachometer.

Published by Houghton Mifflin Harcourt Publishing Company. TACH definition: tachometer. See examples of tach used in a sentence.

Nov 18, 2024 · The tachometer, also known as the “revolution/rev counter” or tach, measures the engine’s revolutions per minute (RPM) or the number of times the crankshaft rotates every minute.

Define tach. tach synonyms, tach pronunciation, tach translation, English dictionary definition of tach. n. Informal A tachometer. American Heritage® Dictionary of the English Language, Fifth Edition.

A tach, short for tachometer, is an instrument that measures the rotation speed of a shaft or disk, as in a motor or other machine. It displays the revolutions per minute (RPM).

tach, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

any device for measuring speed, esp the rate of revolution of a shaft. Tachometers (rev counters) are often fitted to cars to indicate the number of revolutions per minute of the engine. Collins English …

Dec 28, 2025 · tach (third-person singular simple present tacheth, present participle tachinge, first-/third-person singular past indicative and past participle taught) alternative form of techen