PRIN. OF DRAFTING AND SHOP DRAWINGS - OD1641 - LESSON 1/TASK 3
3.
Oblique Drawings
Oblique drawings are technical pictures that can be drawn with instruments. They
are easier to draw than isometric drawings, but they contain more inherent visual
distortion.
Figure 55 compares oblique, isometric, and pictorial drawings of the
same object and illustrates the visual differences among the three.
FIGURE 55.
COMPARISON BETWEEN
ISOMETRIC, OBLIQUE, AND
PICTORIAL DRAWINGS.
The basic reference system for oblique drawings is shown in figure 56 (on the
following page). The most distinct characteristic of the oblique axis is the 90,
relationship between the left-hand axis and the vertical axis. Because of this 90,
relationship, the front view and all surfaces parallel to it are almost identical
to the front view of an orthographic drawing. This makes it very easy to transfer
information between the two different front views.
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