Straight out of Line ruler from Creative Grids
The Straight Out of Line tool creates unique four-patch blocks with the illusion of curves. Use the ruler markings to cut squares from 4″ – 10″ and every half-inch in between. The finished size of the pieced block is approximately 3/4 inch less than the cut block.
Try this easy pattern, Chain Reaction or Against the Rail to see how much fun this ruler can be.