The Stripology® Squared Ruler designed by Gudrun Erla from GE Designs for Creative Grids® helps you square up blocks up to 12-1/2in. · 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 with cutting slits every 1/2in. · Whole inch and half inch increments are marked. Extra markings for making 1/4in and 3/4in cuts are also included. · Use the black lines to square up blocks in whole inches up to 12in and the white lines to square up blocks in half inches up to 12-1/2in. · For quick reference, 1-1/2in cuts are highlighted with black stars, and 2-1/2in cuts with black squares. · Great for fussy cutting and trimming embroidered blocks. The flexibility of the ruler allows it to adjust for the thickness of the embroidery giving you an accurate trim. · Comes with fully illustrated step by step instructions. · Scan the QR Code printed on the ruler to view a how-to video of these features and to see the patterns that can be made with this ruler. Total Size: 14-1/2in x 17-3/4in Slits are 14-3/4in long Creative Grids® Rulers are made in the USA and sold through independent quilt shops as well as select online retailers. Creative Grids® products have a MAP/IMAP (Minimum Advertised Price/Internet Minimum Advertised Price) Policy. Please do not advertise them for less than the suggested retail price.