An Analysis of Drafting for Teachers

adjacent American Standard angle arrowheads assembly drawings auxiliary view axis base circle bill of material bolts center line chamfer circles and arcs circumference complete conic form conic surface Construct contour view counterbores countersink cutting plane cylindric detail diameter dimension lines distance division points draft angle draw a line draw an arc Draw center Draw lines Draw the surface drill edge view elements finished surface front view gears height hidden lines holes horizontal line identify inch Indicate keyway knurl letters machine method notes number of equal oblique parallel pencil piercing points pitch circle points of intersection principal views prismatic surfaces protractor radius equal Represent scale screw threads section lines shape sheet shown in Fig side view Sketch slanting surface smooth curve space Specify straight line surface development symbol T-square tangent taper title strip tooth top view trace triangle true length truncated vertical lines width worm gears