the part of a machine or device that shows you a measurement of something such as speed or time
I looked at the dial to see what time it was.
The analog clock on the wall had a dial indicating the hours and minutes.
The speedometer in the car featured a dial that displayed the current speed of the vehicle.
The oven had a temperature dial that allowed precise control for baking and roasting.
The scientist monitored the experiment, checking the dial on the instrument for any fluctuations in temperature.
