That is a clever product. I have this very old thingy that is made of metal and slides on the top bar of the scissors and lets you adjust the distance you want to measure out when cutting. However, it only goes to 1.25 inches. Using a magnet, you could even use a small ruler (or the broken off end of one) and attach it to the scissors for a guide. Then you'd have a whole range of cutting widths....
Thanks for sharing this!