Cut and square larger patchwork units with the SEW EASY 12 1/2 in square ruler, designed for quilters who need a reliable guide for big blocks and borders. Ruler size is 12 1/2 x 12 1/2 in (317 1/2 x 317 1/2 mm), providing a broad surface for aligning fabric grain, checking corners, and trimming edges accurately. A larger square template helps keep repeated units uniform, which reduces easing and distortion when assembling quilt tops.