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Tachometer

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Revision as of 05:38, 23 April 2016 by imported>Eurodyne (Disambiguate Method to wiktionary:Method using popups)
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A tachometer is a sensor that measures the rotation speed of an object, for example a wheel or shaft. There are different methods to do so (for example, mechanical, optical, or magnetic). Most tachometers display the measurement in revolutions per minute.