UltraGrid by QuiltCut Non-Slip Quilting Ruler - 12½" Square Bonus Set Material Acrylic Brand QuiltCut Color Transparent Style Square,Quilting Ruler Product Dimensions 12"L x 1"W About this item X002XL882R 12½” SQUARE BONUS SET – Includes the popular 12½” square quilting ruler and a bonus 12” x 1” utility ruler. EXCLUSIVE INVISILINES FOR EASY FABRIC POSITIONING – Other rulers use opaque grid lines which hide the fabric. Our exclusive patented invisiline windows allow you to see the edge of your fabric for easy alignment. RIGHT AND LEFT HAND USE – Accurate ⅛ inch measurement scales are printed across the top and bottom of the square ruler from right to left and from left to right, as well as up and down the sides. NO NEED FOR NON-SLIP RINGS – Our non-slip surface holds fabric in place. PRECISION SILK SCREEN ON HIGH QUALITY ACRYLIC – Screen printed on optical grade ⅛ inch thick acrylic, providing a smooth, continuous, vibrant look. Not digitally printed, which can appear pixelated or grainy.