How is the car engine tachometer displayed?

[Mateo]

The method to read the car tachometer is: The design of car tachometers is generally consistent, where the indicated number on the tachometer multiplied by 1000 or 100 represents the engine's revolutions per minute. Introduction to the car tachometer: 1. The car tachometer is divided into several zones, typically including a white zone and a red zone. Some special models may also have a green zone on the tachometer. The white zone indicates the safe RPM range, the red zone indicates the dangerous RPM range, and the green zone represents the engine's most economical operating range. With these markings, drivers can save fuel while driving. 2. The tachometer is one of the essential instruments in the mechanical industry, used to measure the speed, linear velocity, or frequency of a motor.