What does a tachometer look like?

A tachometer typically features a round dial with a needle that indicates engine speed, measured in revolutions per minute (RPM). The dial is often marked with a gradient, showing different RPM ranges in color-coded sections, such as green for normal operation and red for the maximum safe limit. Some modern vehicles have digital displays that provide RPM readings in numerical form, but they maintain a similar layout with clear indicators. Overall, a tachometer is designed for quick readability to help drivers monitor engine performance.