Designs GE Designs Stripology Squared Book. Create one of these 10 unique quilts in any size using quick cutting and assembly with the stripology ruler and precut 10 inch Layer Cake squares. By playing with this ruler, a whole new world opened up, but you can easily make these quilts without it. Dive into your stash of pre-cut Layer Cakes or cut your own squares out of your stash. 60 pages in a soft cover.