The optimeter is widely used to precisely measure external size of workpiece by comparison with a gauge block or standard part.
本仪器是一般是用标准器（如量块）以比较法测量工件的尺寸。
The optimeter is widely used to precisely measure external size of workpiece by comparison with a gauge block or standard part.
本仪器是一般是用标准器（如量块）以比较法测量工件的尺寸。
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