Oh gosh this is funny! I just bought Marti Mitchell's kalidescope ruler from the quilt store, Windy Moon Quilts.
I had purchased a used book from the bargains in the country store of the local quilter's guild at the quilt show two years ago.
I figured it was time to get serious about making one too. She is on line and you can look at her stuff there. I love the no brainer rulers ... LOL!