Engineering Graphics

1
Sketching Construction and Visible Lines
Engineering Graphics
2
Sketching Circles and Arcs
Diameter
2/3 of center distance
Diameter
Engineering Graphics
3
Three Types of Pictorial Sketches
Engineering Graphics
4
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.
5
Slanted Surfaces in Obliques
Engineering Graphics
6
Three Types of Oblique Pictorial
Depth 1 sq. 2 units
Depth 1 sq. 1 unit
Engineering Graphics
Depth 1 diagonal 2 units
7
Steps in Sketching Oblique Pictorials
Edges parallel to axes
Best Shape Description
High and Wide at 90 degrees
Depth at 45 degrees
Engineering Graphics
Visible only
Locate along edges