VALUE SCALE
White represents the lightest possible value and black the
darkest. In between exists an intermediate range of grays. A
familiar form of this range is represented by a valueor gray scale
having ten equal gradations from white to black. It is worthwhile
to practice producing both astepped seriesand agraduated
scale of tonal values using a variety of media andtechniques.
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Hatching
Scribble
Stippling
• Note that a series of dots rather than a line defines the edge
of the field.
• It is also possible to execute agray scale on atinted or colored
surface, using a black pencil to define values darker than the
tone of the surface and a white pencil to establish the lighter
values.
132 /ARC HITECTURAL GRAPHICS