Graphical symbols - General principles for the formulation of graphical symbols for use on equipment; Identical with ISO 3461-1:1988 and IEC 60416:1988
Graphical symbols; general principles for the creation of graphical symbols; graphical symbols for use in technical product documentation; identical with ISO 3461-2, edition 1987— 6 стр.
Measurement and control; graphical symbols and identifying letters for process measurement and control funktions, symbols for basic functions by use of process computers— 3 стр.