The Creative Grids Triangle in a Square Ruler is a must-have tool for quilting enthusiasts. With a 2 to 1 ratio, this ruler allows you to cut proportional Triangle Squared blocks that finish to 9 inches. Its unique design with a trimmed tip enables you to cut triangles from the same fabric strips, making piecing easier. Whether you're creating a saw tooth border or Triangle in a Square blocks, this ruler, in conjunction with the Perfect Rectangle ruler, offers precision and versatility for your quilting projects.