If you are in the beginning stages of your tool collection for drywall hanging, home improvements, or other do-it-yourself projects, consider adding a laser level to your kit sooner rather than later. If you are new to laser levels, the first thing you'll most likely encounter is a choice between a self-leveling laser and models sold without that feature. Spend the extra money for a self-leveling laser, as they will reduce the headaches you'll get trying to use the “bubble” to adjust and set the level for your new tool. Any bump or jostle to a standard laser level can knock your measurements out of whack. There is no danger of this with a self-leveling laser product. Just turn it on, and get to work. It's that easy.