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* 恒定测力
* 可测盲孔
* 硬质合金测量面(12mm以上)
* 加长杆
* 校正环规(可选)
* 分度值0.001mm
* Ratchet stop
* Measuring contact points are designed to allow measurements near the bottom of blind holes
* Measuring surface are carbide (12mm above)
* Additional extensions can be added to increase the measuring depth
* Setting rings for origin point setting (optional)
* Resolution:0.001mm