The Stripology XL combines all of the features you love in the original Stripology ruler AND the Stripology Squared. This beauty combines the height of the Stripology Squared - so you can square up blocks up to 12-1/2 inch - with the width of the original Stripology so you can cut up to eight 2-1/2 inch strips or 14 1-1/2 inch strips without ever moving the tool, reducing your rotary cutting time by up to 75 percent. The 2 1/2 inch increments are marked with squares; the 1 1/2 inch increments are marked with stars - no math required! We have added additional bells and whistles as well. There are 60 degree lines as well as 45's; ½ inch lines; and additional angles to aid in cutting perfect triangles every time. This ruler comes with fully illustrated step by step instructions or watch Gudrun's video tutorial.