First vs Third Angle – Orthographic Views

Orthographic views allow us to represent a 3D object in 2D on a drawing. Orthographic views can show us an object viewed from each direction. How the views are laid out on a drawing depends on whether 3rd angle or 1st angle projection is being used. You can tell which angle projection is used by the symbol

Third Angle Projection

What is this symbol box for? : r/Machinists

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First Angle Projection vs. Third Angle Projection : u/indovance

First and Third Angle Proj..

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First Angle and Third Angle Projection : 1st angle vs 3rd Angle Projection

3rd Angle Projection

4-3 Fundamentals of Orthographic Views, Orthographic Views

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