Figure 2-17 illustrates the direction in which vertical lines are drawn with a
T-square or a straightedge.
Figure 2-17. Drawing vertical lines with a
Draw or cut straight lines against a steel straightedge. Made of heavy gauge
steel, they have the weight and strength needed to guide a blade under
pressure. The cork on the bottom of the straightedge helps keep it in place.
Some steel straightedges are beveled. Keep the straightedge clean and do not
bend it out of true.