IEC 60417-2-1998 Graphical symbols for use on equipment - Part 2 Symbol originals http://www.instrument.com.cn/download/shtml/199517.shtml IEC 60417 Corr.1 (2004-10). http://www.instrument.com.cn/download/shtml/199511.shtml
IEC 60417-2-1998 Graphical symbols for use on equipment - Part 2 Symbol originals http://www.instrument.com.cn/download/shtml/199517.shtml IEC 60417 Corr.1 (2004-10). http://www.instrument.com.cn/download/shtml/199511.shtml