Graphical symbols for use on equipment - 12-month subscription to regularly updated online database comprising all graphical symbols published in IEC 60417— 0 стр.
Projection of still pictures and motion-pictures; minimum dimensions for elements, width of lines, dimensions of lettering and graphical symbols in originals for projection— 20 стр.
Projection of still pictures and motion-pictures - Part 4: Reflection and transmittance characteristics of screens; characteristic values, screen types, measurement— 15 стр.
