Ahh, yes! You are using it the correct way...place on top of your ruler. When they first "came out" people would mark with a ruler, then replace the ruler with the Slidelock to cut. A very handy tool!
Now I have switched to the Creative grids rulers because I'm cutting small pieces and so use a 3 1/2 x 12" most often.
Last edited by Kitsie; 11-14-2019 at 07:39 AM.