Home / Standards / GB/T 34873-2017 GB/T 34873-2017 Active Vacuum gauges—Calibration by direct comparison with a reference gauge 真空计 与标准真空计直接比较校准 Standard Type GBT ICS 23.160 CCS J78 Status 现行 Issue Date 2017-11-01 Implementation 2018-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A