What do the three instruments on the dashboard show?

Correct it. Call the dashboard. The dashboard is a large flat area in the front windshield. Generally, cars are four-ring instrument panels, including tachometer, speedometer, oil meter and water thermometer. But now many Japanese and Korean cars have cancelled the water thermometer, and there are only three other meters on the dashboard. The water temperature is changed to an indicator light similar to a thermometer, which is not bright/blue/green under normal circumstances. If the water temperature is too high, it will show red. There are also some cars with simple configuration, such as mini-cars.