So,I won't cut my finger I wear a Teflon glove that is madeto clean fish. You can get them in the sporting good dept. at Wal-Mart, etc.
I used to have problems with my rulers moving around till I purchased a handle that has sucking cups that attaches the handed to the ruler, then you just push down and it doesn't move. I got mine at Harbor Freight for about $5. I think you can get them at bath stores also. They are used to get in and out of the tubs.