The micrometer, which is also called a clock gauge, is a measuring instrument which is more precise than a common ruler.

分厘卡又叫千分表，是一种远比尺子精度高的长度度量工具。

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The micrometer, which is also called a clock gauge, is a measuring instrument which is more precise than a common ruler.

分厘卡又叫千分表，是一种远比尺子精度高的长度度量工具。

youdao