Graphical symbols for diagrams - Part 2: Symbol elements, qualifying symbols and other symbols having general application (IEC 60617-2:1996); German version EN 60617-2:1996— 40 стр.
Direct acting indicating analogue electrical-measuring instruments and their accessories - Part 1: Definitions and general requirements common to all parts (IEC 60051-1:1997); German version EN 60051-1:1998— 25 стр.