Make sure you put it vertically(top hole is directly above bottom hole), and make sure the bottom hole is the one with more crazy design. Planner design is for top. Now, this is the second thing to be noted. I never tested so I have no idea if works or not. I am hoping it does. If you try it out please leave feedback so I know if it works or doesn't work.
Dimentions: long end is 1 in or 25.4 mm, shorter end is half inch or 12.7mm.