This may be a simple answer to a simple question, but how do I determine the thickness of a certain strike plate? I know I could measure, but I don't have anything that would measure something so thin, plus I don't want to peel off and put back on, possibly losing some adhesiveness. I have some bows with Velcro, calf hair, and the leather Bear strike plate that comes with the rug rest. I'm trying to enter the info into an arrow calculator and would like to be as accurate as possible. Thanks.