1. Three Types of Pictorial Sketches
Engineering Graphics

2. Engineering Graphics Sketching Circles and Arcs Diameter
2/3 of center distance
Diameter
Engineering Graphics
Normally the circle only needs to be proportional to the other surfaces of a sketched object.
Care should be taken to place the center of the circle as accurately as possible and the lengths representing the diameters should be shown as equal.

3. Engineering Graphics Oblique Pictorial Characteristics
True Shape
True Shape
Engineering Graphics
Oblique Pictorials are used when most of the
details are in the front view or circles play a major
role in the drawing.

4. Slanted Surfaces in Obliques
Engineering Graphics

5. Engineering Graphics Steps in Sketching Oblique Pictorials
Best Shape Description
Edges parallel
to axes
High and Wide
at 90 degrees
Depth at 45 degrees
Engineering Graphics
Locate along edges
Visible only