Mayline Parallel Straightedges
When you want to draw a line that is square with your drawing paper, or use drafting triangles on, a parallel straightedge bar will perform the job with ease. Parallel straightedge bars are great for making quick sketches before reproducing your ideas in cad. They also are great tools for drawing guidelines when lettering your drawings. Many Design Professionals still use parallel straightedges even though the world of manual drafting has almost been erased by computers.