Pictorial drawing

Pictorial drawings show an object in three dimensions (3D) on paper.

Isometric drawing

• The three main edges (axes) are drawn at 30°, 30° and vertical (90°).
• All measurements along the axes are drawn to true length.
• Draw a box first (the crating method), then cut away the parts.

Oblique drawing

• The front face is drawn true shape (flat, as seen from the front).
• Receding lines are drawn at 45°.
• In cabinet oblique, depth is drawn at half its true length so it looks realistic; in cavalier oblique, it is drawn full length.

Tips

Use a 30°/60° set square for isometric drawing and a 45° set square for oblique drawing. Draw light construction lines first, then line in the outline with a thick, dark line.