No need to reposition these lasers as you work around your room—crosshairs on every surface give you all the reference points you need. They are a good choice for level, plumb, and square applications, such as aligning doors and windows on multiple walls. If you set them on a surface, they level themselves within about 4° and indicate when they are out of level. You can turn this function off when you want to make sure your crosshair is level with something other than the Earth.

Secure them to a tripod using the threaded mount or use the strong magnetic base to attach them to equipment. They come with a magnetic target, which you can mount in your space to reflect the laser beam to increase its visibility in dim conditions and at far distances.