Hi, Mark! I use stacks of them to level the feet on my tripods and telescopes. With the paper backing, they are 0.009" thick, 0.007" is the backing and 0.002" is the is the metalized sticker itself. So, with various combinations, you can level any instrument, without having to fiddle with the leg lengths! On the side of a hill, it takes a lot of stickers. But it's easy to remember > one inch = 111 stickers.
Here's an example, on the tile patio just outside the servants' quarters. In this case, it took Igor, with help from Jeeves, sixteen stickers to level to my satisfaction. Fourteen on the south leg, and just these two (shown) on the east leg. Keep a generous supply on hand, because mud gets them dirty. Tom