利用各种随机附件，亦可进行内外螺纹中径等多种特殊测量。
By using various accessories, it can be used for special measurements, such as pitches of male threads and female threads.
利用各种随机附件，亦可进行内外螺纹中径等多种特殊测量。
By using various accessories, it can be used for special measurements, such as pitches of male threads and female threads.
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