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Use of the Compasses Drawing Errors
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1st angle projection 3rd angle projection arrangement arrow auxiliary view base bracket butt joint centre line circle circular arc circumference common cone construction cube cutting plane cylinder diameter dimension lines distances dotted lines draw lines drawn edge ellipse engineering equal example Exercises face flange front elevation give given in fig hole inclined inserted isometric axes isometric drawings isometric projection isometric view joint ln fig locus machined major axis marked method millimetres oblique projection obtain outline parabola parallel perpendicular pictorial view plan view planes of reference plot polygon pyramid radii radius rectangle rectangular reference right angles rivets scale full screw section plane sectional view set square shaft shown in fig shown opposite shows sloping solids split pin straight line student surface symbols technical drawing tee square thick three views triangle true length true shape usually valve vertical views in fig welding