Meaning of the word "Rev counter" in English

What does "Rev counter" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

Rev counter

US /ˈrɛv ˌkaʊntər/
UK /ˈrɛv ˌkaʊntər/

Noun

a tachometer, especially in a motor vehicle, that indicates the number of revolutions per minute of the engine's crankshaft

Example:
The driver glanced at the rev counter to ensure he wasn't over-revving the engine.
A faulty rev counter can lead to incorrect gear changes.