With all of the features of the original Stripology Ruler, the Squared version is slightly smaller to make it more portable but still larger enough to square up to a 12-1/2″ block.  The cutting slots are longer than the original version so its a perfect choice for cutting your wider fabrics.  Stars mark multiple 1-1’2″ strip cutting slots and squares mark the 2-1’2″ strips!  Why worry about math when you can just cut strips and sew?  Use the multi-colored ruler stickers to mark the unique cutting slots needed for your current pattern.