Creative Grids 8-1/2 inch Square It Up or Fussy Cut Square Quilt Ruler Use the horizontal, vertical, and diagonal markings to square up any block - up to a 8-1/2 inch square. Center and trim embroidery designs, applique blocks, and fussy cut T-Shirts Slides easily over the fabric until pressure is applied Gripper holds the fabric in place to avoid miss-cuts All Creative Grids are Made in the USA