1Portable laser line meter, using 635nm laser, high-accuracy marking. 2Support 360 free rotation, with horizontal cross laser, easy to operate. 32 lines and 1 point laser leveling tool, with bright spots, can better marks the line. 4Widely used in construction, home improvement, home furnishing, furniture, etc. 5It is suitable for laying bricks on wall, laying stairs, installing doors and window, etc. Item Type: Laser Line Meter Material: ABS Model: A8827D Battery: 1.5V 2 x AA Battery (Battery Not Included) Uses: Used in construction, decoration, home improvement, home furnishing, furniture, etc. Output Power: 1mW Laser Wavelength: 635nm/Line; 650nm/Point Vertical And Horizontal Accuracy: 2.5mm/3 m Point Accuracy: 2.0mm/5m Stable Balance Time: