用于Digamatic千分表、指针千分表钢球型测针(单位mm) 性能参数/ 3mm钢球测针L材料货号A7.3硬质合金头901312M2.5*0.45 901454＃2.5*0.45 钢900030M2.5*0.45 塑料901994＃4-48UNF 902018M2.5*0.45 红宝石120047M2.5*0.458.3*硬质合金头902119M2.5*0.45钢900986M2.5*0.4515硬质合金头120049M2.5*0.45红宝石120051M2.5*0.4520硬质合金头137391M2.5*0.45红宝石137392M2.5*0.4525硬质合金头120053M2.5*0.45红宝石120055M2.5*0.45*用于防水指针式千分表。钢球型测针(单位mm)性能参数/球型测针DLSR货号A1057101119M2.5*0.4512.73.187101205＃4-48UNF9.532.389101204＃4-48UNF性能参数/ 球型测针(硬质合金头)DLSR货号A5.255120058M2.5*0.457.5107120059M2.5*0.4510.51010120060M2.5*0.45