Every contractor spends a great deal of time establishing level, plumb and square. Using a laser level can make this task easier. Imagine using a level that is 150 feet long and perfectly straight. Today there are several types of laser levels to choose from: point-to-point levels, rotating levels, hand-held units and self-leveling systems. Some units offer visible beams, while others offer invisible, infrared beams. This article will give some general information on the different types of laser levels, as well as provide some tips for purchasing and using laser levels. Next to trowels, levels are the most frequently used tools on a masonry site. Before selecting a laser level, it pays to spend time evaluating your needs and the various products available in the market.