I found this level at a yard sale. The brass plate was black from tarnish, and the finish on the oak body was dirty and peeling. So, I cleaned it up. It was clearly a high-school shop project. The four screws do not enter the wood in an exact perpendicular fashion, and the student was a little sloppy filing the piercings over the spirit level vial. Still, a nice piece to remind me of a day when we gave teenagers the opportunity to make such things.