This SCA Laser Level is an ideal tool for any alignment or levelling task, whether indoors or outdoors. The use of a laser for levelling lines is a modern but extremely effective tool for faster and more convenient completion of projects. When done correctly, this form of levelling provides a more accurate form of measurement and projects a beam (level-line) for a longer distance than its traditional counterparts. Its hands-free capability makes it very easy to use. Two AAA batteries are required for use, but are not included.