Creative Grids Stripology XL Slotted Quilting Ruler - CGRGE1XL – Made in USA, 17-3/4in x 22in, Non-Slip Grip Extra Large Acrylic Fabric Strip Cutting, Sewing, Crafting, Patchwork Ruler & TemplateMade 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 slots every 1/2in.Whole inch, half inch and quarter inch increments are marked. Additional markings for 1/4in and 3/4in cuts are also included.For quick reference, 1-1/2in cuts are highlighted with black stars and 2-1/2in cuts with black squares.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.Use the 45 and 60 degree angles to cut perfect diamonds and triangles.