"Outside calipers" are used for measuring external sizes, and "inside calipers" for measuring internal sizes.

“外测径器”用来量度外边的尺寸；“内测径器”则量度内部的尺寸。

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"Outside calipers" are used for measuring external sizes, and "inside calipers" for measuring internal sizes.

“外测径器”用来量度外边的尺寸；“内测径器”则量度内部的尺寸。

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