gauge

/geɪʤ/

a measuring instrument for measuring and indicating a quantity such as the thickness of wire or the amount of rain etc.

中文释义：测量仪器；计量表

The pressure gauge indicated that the tire needed more air.

压力表显示轮胎需要充气。

A rain gauge is used to measure the amount of precipitation.

雨量计用于测量降水量。