Auxiliary Views

Figure 5.13A,B A. Oblique drawing with foreshortening how the circle looks elongated (source: Paul Hudson).

B. Oblique drawing with no foreshortening. Notice thographic projection views. The resulting view then reflects the true shape of the oblique feature while eliminating much time-consuming projection for the drafter.

Auxiliary views may be full or partial views. Rounded surfaces and circular holes, which are distorted in the regular views and appear as ellipses, appear in their true sizes and shapes in an auxiliary view, as can be seen in Figure 5.14B.

Auxiliary views are named according to the position from which the inclined face is seen. For example, the auxiliary view may be a front, top, bottom, left, or right view (Figure 5.15). In drawings of complex parts involving compound angles, one auxiliary view may be developed from another auxiliary view. The first auxiliary view is called the primary view, and the views developed from it are called secondary auxiliary views.

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