dial indicator

例句：

1. 1. The dial indicator on the phone is used to adjust the volume.
   电话上的拨号指示器用于调整音量。
2. 2.The dial indicator on the computer screen shows the current temperature.
   电脑屏幕上的拨号指示器显示当前温度。
3. 3. The dial indicator on the car dashboard shows the speed and fuel level.
   汽车仪表盘上的拨号指示器显示速度和燃油水平。