Orthographic Drawing. Multiview Projection. Projection a view of an object Is a photograph enough to describe an object? A number of views, systematically arranged. Perspective Projection. Source, at a definite distance. . Orthographic Drawing. Source, at an infinite distance.
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Source, at a definite distance.
Source, at an infinite distance
The Glass Box
A transparent picture plane is set up between object and the station point of an observer’s eye.
Mitter line can only be used when the views are placed equidistantly.
The observer looks through the object to the planes of projection.
Parallel to the plane of projection (true shape&size)
Perpendicular to a plane, but inclined or tipped to adjacent planes. Edge vien on perp. Plane, fs view on inclined planes
FS on all planes.
Point on perpendicular Plane.
Shortened on adjacent planes
(vertical / horizontal)
Shortened & Angled
Dashed hidden lines are used to represent features that would be hidden behind other surfaces.
Used to indicate symmetrical axes of circles