Which term describes a drawing view used to reveal the true size of oblique surfaces?

Which term describes a drawing view used to reveal the true size of oblique surfaces?

• A. Auxiliary view
• B. Section view
• C. Detail view
• D. Perspective view

Answer: (A)

When a surface is oblique to the main projection planes, it gets foreshortened in the standard views. An auxiliary view uses a plane that is oriented parallel to that oblique surface, and you project onto this auxiliary plane. Because the plane is parallel to the surface, the drawing shows the surface in its true size and shape, with accurate measurements directly on that view. This is exactly what you need to reveal the true size of oblique surfaces. The other views don’t provide that true size: a section view cuts through the object to show interior features, a detail view simply magnifies a small region, and a perspective view gives a three-dimensional depiction with perspective distortion rather than true dimensions.

When a surface is oblique to the main projection planes, it gets foreshortened in the standard views. An auxiliary view uses a plane that is oriented parallel to that oblique surface, and you project onto this auxiliary plane. Because the plane is parallel to the surface, the drawing shows the surface in its true size and shape, with accurate measurements directly on that view. This is exactly what you need to reveal the true size of oblique surfaces.

The other views don’t provide that true size: a section view cuts through the object to show interior features, a detail view simply magnifies a small region, and a perspective view gives a three-dimensional depiction with perspective distortion rather than true dimensions.