Find precision squares, bevels and stair gauges at Grainger when you need to ensure 90° corners, straight and even stairs and precise angles. Look here for carpenter and rafter squares, drywall T square and scoring squares, a stair gauge set and more. Need a T bevel? Choose from mahogany, ABS and molded polymer handled models with stainless steel blades. Shop Grainger today for durable squares, bevels and stair gauges in a variety of sizes.