What is another word for tacho?
Pronunciation: [tˈakə͡ʊ] (IPA) 
Tacho is a common slang term used for tachometer, a device that measures the rotational speed of an engine or other rotating objects. There are several synonyms for this word such as rev counter, RPM Gauge, Speedometer, Engine Speed Indicator, and Tach. A rev counter or RPM gauge determines the rotating speed in revolutions per minute. A speedometer, on the other hand, measures the speed of a moving object. The engine speed indicator is similar to the tacho and helps to determine the engine's speed. Finally, tach is a shortened form of tachometer, and it's commonly used as a slang term for this device. Overall, these synonyms are interchangeable and can be used in place of Tacho.
