A laser scale is a spirit level that contains two intersecting lasers and is very easy to set up and use, just press “on” and you are ready to go! The laser scale contains sound and visual signals that inform the user when the scale is out of level. The laser scale is a great addition to any set of tools. The scale also includes the ability to “lock” levels, so you can set the scale on a slope and get oblique laser lines when needed.