Originally Posted by LeeMae
Omnigrid puts out several sizes of Ruler grips. The one I use on my 24x6 inch ruler has a suction cup at each end. You can buy them at Joanns or go to Harbor Freight and for half the price they have a similar item that they use as a safety handle in the bath tub area. Ended my ruler slipping because your weight is evenly distributed on the whole ruler surface.
Maybe I shouldn't tell you but I paid .50 at a yard sale for one. ( still in the wrapper not used )