I taught Mom to make the Pineapple quilt from the Quilt in a Day book using their 12.5 inch ruler and this was her 3rd one.
I pieced mine a couple years ago after Sandra from Stashbuster showed me the book and how she makes the blocks. She suggested 1.75 inch strips (they're trimmed down) which is what I used. I'm just waiting for Accuquilt to come out with a 1.75 inch strip cutter for the GO cutter so I can make another!
I really recommend this method for making them.