tachometer
IPA: tɑtʃˈɑmʌtɝ
noun
- A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.
- A device for measuring or indicating velocity or speed, as of blood, a river, a machine, etc.
IPA: tɑtʃˈɑmʌtɝ
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