外溝槽數(shù)顯卡尺（圓柱測(cè)頭）

1.帶電源開關(guān)   Manual power on/off.
2.任意位置清零和公英制轉(zhuǎn)換   Zero setting and mm/inch conversion at any position.
3.帶數(shù)據(jù)輸出口   With data output interface.
4.測(cè)量狹縫處外溝槽尺寸   Specially designed for measuring outside groove which is hard to reach.

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