What Is A Tachometer And What Does It Do?

Every car, whether it has manual or automatic transmission has a tachometer. However it begs the question: why does an automatic vehicle need a tachometer?

Tachometers - A Complete Guide

What Is A Tachometer And What Does It Do?

What does RPM stand for?

RPM Gauge Not Working: What To Do — Hansma Automotive

Noticed a red light on the tachometer of my 19' Challenger SXT AWD when engine is running. Disappeared when I restarted the engine. Anyone know what that is for? : r/Challenger

3-3/8 IN-DASH TACHOMETER, 0-10,000 RPM, ULTRA-LITE

How do Digital Non-contact Tachometers work? - Metravi Instruments

Ford Ranger Tachometer Install - The Ranger Station

What does RPM stand for?

What Does RPM Mean in Cars?

What Is An Instrument Panel?