特点：1.通过连接延长杆（延长管）和带有微分头的测钻可扩大测量范围2.可选择硬质合金测量面3.139和140系列采用高耐磨性/大直径延长管公制型测量范围货 号测头行程延长管100-125mm139-00125mm- 100-500mm139-17325mm25mm.50mm.100mm.200mm 100-900mm139-17425mm25mm.50mm.100mm.200mm.400mm 100-1300mm139-17525mm25mm.50mmm.100mmm.200mmm400mm(2个) 100-1700mm139-17625mm25mm.50mm.100mm.200mm.400mm(3个) 100-2100mm139-17725mm25mm.50mm.100mmm.200mm.400mm(4个) 100-2000mm140-15750mm50mm.100mm(2个).200mm.500mm 100-3000mm140-15850mm50mm.100mm(2个).200mm.500mm.1000mm