The Empire 12" Polysteel Combination Square (220) is a metal combination square that is a multi-purpose tool used for applications that require a 45-degree miter, a depth gage, a level, a plumb, and a precision rule. This item features easy-to-read, sharp 8ths, 16ths, 32nds, and 64ths graduations. It features a durable acrylic vial and blade lock for quick & accurate adjustment. The stainless steel blade is 12" in length.