Finally a quick, precise way to measure angles without having to construct a special template. Just set the Angle-izer Instant Template in place, slide its four arms to conform to your projectâ€™s angles, then tighten the thumbscrews. Perfect for laying tile or flooring, or fitting countertops to corners. Includes CD-ROM for your Windows computer with project calculator for cutting parts to fit arches or circular patterns (perfect for cutting pavers to fit curving walkways, etc.).