Sew Easy 6.5 Inch x 6.5 Inch Square Patchwork Quilt Ruler NL4177 Sew Easy Qult Ruler. 6.5 Inch x 6.5 Inch. Made from tough, durable acrylic. Laser-cut for smoother, more accurate cutting. Improved, sharper, two-color grid with all essential measurements clearly marked.