Now with easier-to-read lines and finer markings for accurate measuring this ruler is perfect to use with Not Your Grandmother's Log Cabin 2nd Edition (Item #CT11161). If you only want to buy one ruler that can measure and cut almost any size and is still easy to handle this is the one. The extra diagonal lines allow for keeping the 60 degree angle true. The right tools make the process so much easier! 12inx12in.