The micrometer, which is also called a clockgauge, 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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It is indicated that the precise flat Plate, hollow column and clockgauge should be selected properly to satisfy actual requirements for measuring accuracy of oil well pump...
It is indicated that the precise flat Plate, hollow column and clockgauge should be selected properly to satisfy actual requirements for measuring accuracy of oil well pump liners.