Using the Bosch GLL40-20G is a breeze. First, insert the two AA batteries into the battery compartment. Then, you can use the included MM 2 Flexible Mounting Device. Clamp it onto a surface that's between 1/2 inch and 2-1/4 inches thick. The 360° rotating neck allows you to quickly set up the laser at the right angle and make fine adjustments. Once it's set up, turn on the laser. The Smart Pendulum System will automatically self-level the laser. If it's out of level, it will indicate this to you. When you're done with the tool, switch it off. The pendulum will lock, which helps protect the tool during transport. As for maintenance, keep the tool clean. You can use a soft, dry cloth to wipe it down. Avoid using harsh chemicals or abrasive materials. Also, when not in use for a long time, remove the batteries to prevent corrosion. That's all you need to know to get the most out of your Bosch GLL40-20G cross-line laser.
