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A truncated cone in two views, mirrored from the first-angle symbol, stating the American convention.
Also known as: American projection symbol, Cone with circles on the right
Third-angle projection places each view on the side nearest the observer — the opposite of first-angle. The symbol is the first-angle one mirrored, which is the clearest possible statement of the relationship.
States that the drawing's views are arranged by third-angle projection, in which each view is placed on the side nearest the observer.
Contexts: Technical drawing
Is the dominant convention in North America, where first-angle is dominant in Europe — a difference of practice rather than of correctness.
Contexts: Technical drawing
A truncated cone drawn in side view as a trapezoid, with its end view of two concentric circles placed to the right of it.
Mirror images read at a glance.
The alternative arrangement.