i was resently working on a finished 1 inch block it was so small it kept moving. I had some double sided tape i use to post a pattern near my work space, so i tried it on the back of the ruler. It was great , it didn't add any size to the piece i cut. Also cheap and handy. I have used the dots on the rulers but they need to be balanced so they don't wobble when cutting. yes i have the invisible stuff too it got a wrinkle on the placstic. I'll stick with my new found tape.