3D Level Machine 360° Rotatable Base 1/4in Screw 12 Lines Level Machine for Wallpapering The 3D level meter can emit visible lase horizontal and vertical lines for the automatic leveling separately or simultaneously. Provides accurate horizontal and vertical datums for indoor construction stakeout and calibration, easy to operate, and versatile. Suitble for flooring tile layout, paneling, wallpapering, stenciling, wainscoting, finish carpentry, wall stud layout and partition installation.  Features: Output 12 laser lines for finer positioning, with self leveling system, flexibility and stability. 360° rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target.  1/4" screw size for easy connection, it can be used with tripod to adjust the working height of the machine. Water resistant, suitable for both indoor and outdoor use. Adopts optical glass, K9 material, fine transmission, with clear laser light. Equipped with self test calibration function, ≤3° automatic leveling, but if the angle is over 3°, the laser light will keep blinking reminding you to reset them on a flat ground. Rotation knob design, clockwise rotate to open it, anticlockwise  rotate to close it. Two touching buttons design, one OUT/H button, one V button, horizontal line and vertical line with a clearly division. The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. Easy to carry with the case, providing quick and convenient mobility and storage. Specifications: Main material: plastics+metal Laser ray: 3D, 12 lines  Range: 30m Laser lines accuracy: ±0.2mm/m Laser light color: green light Self levelling-range: ±3° Leveling time: ＜4s Laser class: 2 Working temperature: -10℃ to 40℃ Storage temperature: -20℃ to 70℃ Moisture: 90% Continous time: 3-9 hours Assemble size: 137 * 110 * 217mm / 5.39 * 4.33 * 8.54in Item weight: 1106g / 2.44lb Package size: 270 * 227 * 164mm Package weight: 1430g