Square It Up 12.5" RulerUse the horizontal, vertical, and diagonal markings to square up any block up to a 12 1 2 inch square. Use these lines to center and trim embroidery designs, applique blocks, and even fussy cut T Shirts for T Shirt quilts. (Fussy cutting is choosing a specific design in the fabric to showcase in your project.) The drilled holes at 1 1 2 to 11 1 2 inch increments, make it possible to square up, mark and add the seam allowance to any block. To fussy