Every DIYer needs a good pencil; for most tradespeople, a square pencil is the way to go. The wide flat edges keep it from rolling off uneven surfaces, and they make it easier to get a close mark on a wall or when drawing a line from a level. 

These particular pencils have the classic saying “Measure twice, cut once” on them, something most of us fail to do — so instead, the pencil has the last “E” cut off. It’s a great joke that had my dad, who I bought them for, belly laughing for hours.