Post on 31-Mar-2015
Communication
Technical Sketching and Drawing
Orthographic Sketch
• A Multi-view drawing that typically shows the front , right side and top view. (orthographic)
• When the side view is perfectly in line with the front view, it is called Projection.
Orthographic con’t
• The top view’s width dimension is projected from which other view?
• Front View
Orthographic Con’t
• The Surface with the most detail is shown is which view?
• Front View• Most detailed drawings are orthographic
drawings
Cabinet (oblique)
• In cabinet oblique drawings, the receding lines are shortened by one-half their true length to compensate for distortion and to approximate more closely what the human eye would see..
Cavalier
• In cavalier oblique drawings, all lines (including receding lines) are made to their true length.
Oblique Drawings
• A Sketch shows the front view as if a person were looking directly at it.
Isometric
• A pictorial sketch that has been drawn as it it were viewed from one corner at a 30 º angle.
Perspective
• A sketch that shows the object as the human eye or camera would see it.
• 1 pt
2 pt Perspective
3 pt Perspective
Types of Lines