Self-leveling, with a single button lets you switch between four different functions: a horizontal line, a vertical line, a cross, a cross fixed. Could be possible to exclude function leveling and tilt the instrument at any angle for the construction of inclined planes. Laser diode: 635 nm, Class 2M. Accuracy: + / - 6 mm to 9 meters. Line Length: 18 meters to 9 meters away. Field leveling: + / - 5 °. Capacity: 10 meters indoors. The package includes: rod (2.78 meters to 3 sections) with support hand drive, manual, carrying bag.