Third Angle Projection

Third Angle Projection

Third Angle Projection is commonly used in United States of America.

The difference or comparison between First Angle Projection and Third Angle Projection is well described in next chapter.

The object is imagined to be in third quadrant.

The plane of projection lies between the observer and object. The plane of projection is assumed to be transparent.

When view are drawn in their relative position Top view comes above Front view, Right side view drawn to the right side of elevation.

A Third Angle Projection drawing is identified by the third angle projection symbol. The angle of projection symbol typically appears in angle of projection block near to Title block.

Mechanical Basics                                                                                                              First Angle Projection

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