National foreword
Committees responsible
List of symbols
Chapter I : Symbol elements
Section
1 Outlines and enclosures
Chapter II : Qualifying symbols
2 Kind of current and voltage
3 Variability
4 Direction of force or motion
5 Direction of flow
6 Operational dependence on a characteristic quantity
7 Types of material
8 Effect or dependence
9 Radiation
10 Signal waveforms
11 Printing, perforating and facsimile
Chapter III: Other symbols having general application
12 Mechanical controls
13 Operating devices and methods
14 Control by non-electrical quantities
15 Earth and frame connections, equipotentiality
16 Ideal circuit elements
17 Miscellaneous
Appendix A : Older symbols
A1 Operating device