INCRA G455 5-In. Guaranteed 45-Deg. Angle - Precision Layout & Tool Positioning

The name is the promise of accuracy. This beautifully machined 5" X 45 degree square is guaranteed accurate to .001" from heel to toe. Made with a hefty 1/4" thick solid aluminum alloy body, each square is machined from a single piece, eliminating the potential alignment errors that can occur when a separate blade is manually assembled to a separate handle.The one piece body won't get "bent out of shape" if accidentally dropped, and the anodized blade and body won't tarnish like brass. Pretty to look at, but so accurate it will be a constant work companion. USA