Kaitian 8 Line Laser Level Alignment Tool Level Vertical and Horizontal Rotary Laser Levels Cross Line Laser AUTOMATIC SELF LEVELING : with the smart sensor control system,laser lines would be adjusted automatically in 4 degree) POWERFUL GREEN LASER: the green laser beam 4 times brighter than standard red beams,working distance up to 65 Ft HIGH ACCURACY: horizontal and vertical lines precision within 1/8 in @ 33 ft FULL LAYOUT WITH 3 X 360 LINE LASER: one 360 horizontal and two 360 Vertical Planes,Three-Plane Leveling and Alignment-Line Laser is both a complete level as well as an alignment laser MULTI-FUNCTION : it easy to project lines in any angle with tilt function , it can be work with receiver ,and micro-adjust lines by base