These precision ground and hardened all steel engineer's squares are ideal for setting up tools, aligning  blades, and ensuring parts are set up properly. All surfaces are ground to ensure they are straight and parallel. Unlike wooden and adjustable squares, the grinding process helps ensure the engineer's square is always accurate.

The beam is grooved at inside corner for clearance of sawdust or dirt. The blade length is measured from the inner edge to the tip. Squareness accuracy is 0.002". No measurements or graduation appear on the blade.