Cross-line lasers with cross laser

A cross-line laser with cross laser makes 1 horizontal line and 1 line from top to bottom. These lines cross each other and make a clear cross on the wall. That's useful if you want to hang a painting, mirror, or shelf. You can see right away what's straight and where the middle is, without needing a spirit level. A cross laser is also useful if you want to hang multiple items at the same height.