Manual Drawing - 3D Drawing

Isometric ProjectionsIsometric Projection uses vertical lines and lines drawn at 30° to horizontal. A 30° set square is used to ensure accuracy. Dimensions are shown accurately and in the correct proportion. This makes it easy to draw the projection to scale from a plan view. Isometric projection distorts shapes to keep all upright lines vertical.

Isometric Projection

Oblique ProjectionsIn Oblique Projections the front view is drawn true size, and the receding surfaces are drawn on an angle to give it a pictorial appearance. This form of projection has the advantage of showing one face (the front face) of the object without distortion. Generally, the face with the greatest detail faces the front. It typically either 45°- 45° or 30°- 60°.

Oblique Projection