货号产品型号测量范围分度值用途NR.TypeRangeResolutionUsage642-013ATY0~3mm0.01mm 直接测量导管外表面之凹痕及裂纹深度 Measuretheconcavemarkandcrackleofpipe.642-014XX0~10mm0.01mm 用于测量相互连接的钻杆的同轴度误差 Measurethecoaxialvariationoftheconnectingdrillstems.642-015NWK0~450mm0.02mm 用于测量大口径长钢管的内外径测量 Measuretheinnerandouterdiameterofbigpipe.