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auxiliary view
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Figure 8: Descriptive geometry, principle II (see text). Figure 9: Use of auxiliary view to show true size and shape of an inclined surface (ABCD), which is not correctly represented in the front, top, or side view (see text).
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auxiliary view

drafting
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Figure 8: Descriptive geometry, principle II (see text).
Figure 8: Descriptive geometry, principle II (see text).

In drafting, an auxiliary view is an additional projection used to show the true size and shape of surfaces that are not parallel to the standard principal views (front, top, or side). These surfaces are described as being in an inclined or oblique position.

When an object has surfaces that are not parallel to the main projection planes, a standard orthographic projection won't accurately represent their true dimensions. An auxiliary view is created by projecting the object onto a plane that is parallel to the inclined or oblique surface. This ensures that the surface is shown in its actual size and shape, which is crucial for accurate technical drawings. This method helps to avoid ambiguity in the representation of complex objects.12

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  1. drafting - Auxiliary views
  2. drafting - Ambiguity

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