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Non-isometric Lines. If
you examine the isometric drawing
shown in figure 5-39, you will note
that each line in the drawing is parallel to one
or another of the legs of the isometric axis. You
will also notice that each line is a normal line in
the multi-view projection. Recall that a normal
line is a line that, in a normal multi-view projection,
is parallel to two of the planes of projection
and perpendicular to the third. Thus,
Figure 5-39.-Use of "box construction" in isometric drawing.
Figure 5-40.-A non-isometric line (AB) in an isometric projection.a NON-ISOMETRIC LINE is a line that is not parallel to any one of the three legs of the isometric axis. It is not a normal line in a normal multi-view projection of the object. |
 
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