Features: Clear LCD display with data hold function shows measuring results accurately and intuitively. Rich operation buttons can achieve multiple practical functions such as absolute level measuring, relative angle measuring, slope and angle conversion, laser measuring optional. High strength aluminum alloy body, wear resistant and anti-impact, durable in use. Strong magnet at the bottom offers great convenience to work on metal surface, improving stability and working efficiency. Widely used in the machining angle measurement of various machines. Specification: Material: Aluminum alloy Battery type: 6F22 9V (not included) Optional length: 173mm, 248mm, 630mm Measuring angle range: 4x90 Resolution: 0.05 Accuracy: 0.1 Package list: 1 x Digital Laser Level Ruler