Noah lent me his laser level and it is awesome! I use it in the first course of tile. Despite our best efforts, alas, the floors are still not perfectly level so Noah’s tool comes in handle. Before this I was using a 4 foot level but it was hard being spot on turning the corners or comparing one side of the room with another. Now it’s a breeze. I might have to invest, especially if he takes it back before I am done!