12 INCH T-SQUARE - The Woodpeckers 12 inch t square ruler is made out of machined aluminum that is perfectly fitted to a solid, billet handle. Includes Rack-It wall mount storage. BUILT-IN SCRIBING GUIDE - The blade itself has precisely spaced 1mm holes drilled every 1/16”. Stick a pencil in the hole, slide it along your work piece and presto, a perfectly spaced line, accurately following the edge of your stock. SUPERIOR STABILITY - The innovative beam design with support lips prevents tipping and rolling, providing a solid base for accurate marking. MORE FEATURES - The t-square has laser engraved scales (accurate within 0.004"). Built in 1/4" holes on 1" centers ideal for laying out shelf pins. Beveled edges that put scale markings right down next to your stock. MADE IN USA - Crafted with precision and pride in Strongsville, Ohio, each T-Square undergoes meticulous inspection to ensure superior quality and reliability. Backed by our commitment to excellence, these tools are built to last a lifetime.