Page:Sheet Metal Drafting.djvu/168

154 the line last drawn. A distance of 1⅛ in. is measured in from each perpendicular in order to locate points 10 and 13. Lines 1-10

and 9-13 complete the pattern. Three-sixteenths inch edges are added to the sides and to the bottom, and a ⅜-inch wire edge to the top of the pattern.