Square up blocks and patchwork units with the SEW EASY 6 1/2 in square ruler, a handy measuring guide for quilters and patchworkers building sampler and wall quilt projects. Ruler size is 165 x 165 mm (6 1/2 x 6 1/2 in), giving enough surface to align fabric, verify corners, and trim pieces to a consistent size. Use it to measure and mark repeatable squares and corner cuts, helping blocks join cleanly when seams and borders come together.