Home / Standards / GB/T 6314-2018 GB/T 6314-2018 Active Internal micrometer with three-point contact 三爪内径千分尺 Standard Type GBT ICS 17.040.30 CCS J42 Status 现行 Issue Date 2018-05-14 Implementation 2018-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会