Drawing can be the most economical of art forms. It can be the
most direct, personal, and expressive medium. Drawing can be the
documentation of the thought process, the outline for other media, or a
finished product.
Below is a gray-scale that approximates the value scale used by
graded pencils. Although the shades are computer generated, it is
helpful in understanding the numbering system. the B's
are black and soft, the H's are hard and
grayer. The numbers indicate the relative degree, by
comparison, of hardness or blackness.
Pencils are sold as single pencils or boxed sets. Two popular
boxed sets are the hard range (technical drawing) and soft range
(Sketching).
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