Made in the USA with high quality acrylic and precision measurements ensuring accuracy for your quilting, sewing, patchwork, and crafting projects. Creative Grids exclusive non-slip grip allows you to easily slide the ruler over the fabric until positioned correctly. Then, when slight pressure is applied, the grip holds the ruler in place, eliminating slipping while you cut. Easy to read black and white markings. Cut around the square to create your own 10in squares from your stash. 1/2in grid covers the entire square, and 2-1/2in squares and strips, 5in squares and strips, and 9-1/2in squares are highlighted. 45 degree line makes quick work of trimming half-square triangle blocks. Comes with fully illustrated step by step instructions. Scan the QR Code printed on the instructions to view a how-to video of these features and to see the patterns that can be made with this ruler. Total Size – 10in x 10in This 10in Perfect Square ruler is designed by It’s Sew Emma for Creative Grids. It can cut a variety of popular shapes from precut 10in squares or from your stash.