Hang and install shelving and picture frames with more accuracy and precision using the RYOBI 15m Green Cross Line Laser. Start and finish tiling projects with accurate plumb and level lines, too. It’s a great tool for DIY jobs that require precise leveling, alignment or layout. This Cross Line Laser simultaneously projects horizontal and vertical green laser lines onto surfaces so you can accurately line up objects for installation. This Cross Line Laser also has an automatic self-levelling feature with an LED indicator to ensure laser lines will automatically self-level within three seconds. Its green laser lines can be projected from up to 15 metres away and they are accurate up to ±0.5mm/m. The Cross Line Laser has a ¼” mounting point for securing to tripods and extension poles. It also has a clamping bracket for clamping onto materials up to 58mm thick. Two AA batteries are included for operation straight out of the box.