Precise laser for clear visibility GREEN LASER BEAM: Adopting advanced green laser technology, compared with the traditional red laser, the green laser has higher visibility in both indoor and outdoor environments, and the laser line can be clearly seen even in bright light conditions, ensuring the accuracy of construction or measurement. 2-Line design: Featuring two mutually perpendicular laser lines, it can provide both horizontal and vertical datum lines to meet a variety of construction needs, such as installing doors and windows, hanging picture frames, laying tiles, etc. It helps users to quickly and accurately determine the horizontal and vertical positions. Automatic levelling, fast and accurate Auto levelling function: The instrument has a built-in high-precision auto levelling system, which can automatically adjust the laser line to horizontal or vertical in a short time, without the need for cumbersome manual adjustments, which greatly improves the working efficiency. Even when used on uneven surfaces, it can quickly achieve accurate levelling, the levelling range is usually within 4, ensuring the accuracy of the laser line. Levelling alarm function: When the instrument is tilted beyond the levelling range, an alarm tone will be issued to remind the user to adjust the position of the instrument in a timely manner, avoiding measurement errors caused by the instrument tilting, and safeguarding the quality of construction. Magnetic adsorption, convenient to use Strong magnetic base: the bottom of the levelling instrument is equipped with a strong magnetic adsorption device, which can be firmly adsorbed on metal surfaces, such as iron pipes, steel beams, etc. It is convenient to measure and work in different positions and angles without additional fixtures, which reduces the complexity of the operation and improves the convenience of the work. Flexible rotation: the magnetic base supports 360 rotation, users can easily adjust the direction of the laser line according to the actual needs, to achieve a full range of measurement and calibration, whether in a small space or a large construction site, can be a flexible response.