When I was in high school, I did math on a slide ruler and personal computers did not exist yet. The conduit of design communication was an engineering drawing, commonly prepared on a drafting table with pen and ink on velum. Pictured above is the set of 12 pens of various sizes that I used for such drawings. When I came across them today while organizing some drawers in my shop, I was immediately transported to my 11th-grade drafting class, where I have fond memories of perfecting my drawing technique, a skill that still serves me well today.