Home / Standards / GB/T 4028-1994 GB/T 4028-1994 Abolished Timekeeping instruments--Symbolization of control positions 计时仪器的检验位置标记 Standard Type GBT ICS 39.040.20 CCS Y11 Status 废止 Issue Date 1994-12-30 Implementation 1995-10-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A