1、HIGHLY VISIBLE GREEN LIGHT BEAM: Green light can project vertical chalk lines on any surface up to 15M, and bright and incisive light can help you align, and tilt at a 90 ° angle for alignment. 2、APPLICABLE SCENARIO: Suitable for various accuracy alignment applications such as civil engineering, building construction, stair starting boards, shelves, 90 ° angle laying and forming of floor and wall bricks, hanging pictures, etc. 3、IMPROVING WORK EFFICIENCY: Green leveler maintains the characteristics of a 90 degree and can shoot two extended right angle lines, significantly extending the angle of the right angle, simplifying the original scribing and pulling work, and improving work efficiency. 4、EASY TO USE: Powered by a large capacity 18650 lithium battery that can be cycled and used (not included), extending continuous use time. At the same time, the line level adopts ON and OFF dual switches to achieve single line operation or double line operation at a 90 ° angle. Equipped with a dual level bubble gauge, used for plane or vertical accuracy alignment. 5、EASY TO INSTALL: The bottom is equipped with a magnet that can be adsorbed on the iron plate for use, and 3 fixing holes are reserved. The line level can be fixed on the wall with small steel nails for easy use by operators. 6、ANGLE ADJUSTABLE: 2 small holes for fine adjustment angle are reserved at the inner corner of the light ray outlet. Use a small cross screwdriver to insert it into the hole and align it with the small screw to adjust the angle. According to the left or right state of the ground light, adjust the angle clockwise when it is left, and counterclockwise when it is right.