Ok here we go....I have a gripper handle that i got at my menards in there bathroom section for 2 bucks. they are cheaper there than at Joanns or hobby lobby even at regular price. theses help me hold it. Then i have some of that puffy shelf liner on it that you can get at the dollar store to use for grip to help the slip on the underneith side.in a pince you can wrap packing tape backwards around the ruler too so the sticky side is out.