Alpha® introduces a completely new idea to mark, cut and grind the square corners of glass, tile, stone, steel, plastic and wood - the Alpha® Corner Ruler. This patent pending Corner Ruler makes any application easy and error free. Stone fabricators can use the Corner Ruler in conjunction with a Profiler Z-Series to make a perfect corner every time. Glaziers and tile contractors can mark not only the radius but also cut the corner with a carbide glass cutter or the Alpha® Corner Nipper. Home Builders can mark each corner quickly and easily for a faster preparation time. Each Corner Ruler comes with two radiuses or two 45-degree straight lines, each series has 14 patterns. The complete set of 28 patterns covers all your needs. Each set comes in a stainless steel case for organization.Prevent errors by doing it right the first time with the Alpha® Corner Rulers.