The Woodpeckers Woodworking Rule 12″ is a precision measuring tool designed for woodworking tasks. It’s straighter, heavier, and sits flatter than other rules on the market. With an engraving tolerance of ±0.004″, it’s among the finest rules you can have in your workshop. The rule is machined from aircraft-grade aluminum, anodized for surface protection, and features beveled edges to reduce parallax error. The bright white laser-engraved scales provide excellent contrast against the red anodized surface. Finger grooves aid in positioning, and the backside has a relieved section to keep the edges lying flat on your work.