日本三丰MITUTOYO数显外径千分尺293系列编号........................................测量范围/分辨率..................................备.....注293-240.....................................0-25mmX0.001mm.......................-------293-241.....................................25-50mmX0.001mm.....................-------293-242.....................................50-75mmX0.001mm.....................-------293-243.....................................75-100mmX0.001mm...................-------293-340.....................................0-25mmX0.001mm/0.00005 .......-------293-341.....................................25-50mmX0.001mm/0.00005 .....-------293-342.....................................50-75mmX0.001mm/0.00005 .....-------293-343.....................................75-100mmX0.001mm/0.00005 ...-------一、特点：1）有特价，基本功能齐全。2）防水防油功能。3）任意处清零。4）带锁定装置。