Home / Standards / QB/T 1474.2-1992 QB/T 1474.2-1992 Abolished 绘图仪尺 三角尺 Standard Type QB ICS N/A CCS N/A Status Abolished Issue Date 1992-04-14 Implementation 1992-12-01 Centralized Committee 轻工业部 Issuing Authority 轻工业部