To produce a sectional view, an imaginary plane, called the cutting plane,
cuts through the object and the two halves are separated to expose the interior
construction. The direction of sight may be toward the right or left half,
while you disregard the portion of the object nearest the observer.
cutting plane line or viewing plane line to indicate the cutting plane and the
direction of sight.
Sectional views may be further classified as full, half,
broken-out, revolved, removed, offset, aligned sections, and partial views.
Figure 3-51 shows an imaginary plane cutting through an object.
Figure 3-51.Sectional views.
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