I have one and find it very helpful for projects where there are lots of strips or squares to cut. There are also markings for other angles and shapes. Realize it's set up for 1/2" increments, and requires repositioning of fabric to get anything at 1/4" sizes. GE Designs has a lot of videos; I'd recommend watching the Stripology XLruler video to learn more before spending the $$. For me, it was worth the price.