400mm/16inch Digital Spirit Level with Digital Audio Indicator, Aluminum Alloy Angle Finder with Magnetic Base, Angle Measuring Tools, Gauge, Large Clear LED Display

【High Precision Digital Level Ruler】 4 measuring modes: measuring degree, IN/FT step, mm/M and slope percentage. High precision: The accuracy is ±0.1° at 0° and 90°, and the accuracy is ±0.2° at 1-89°. Resolution: ±0.01° at 0° and 90°, ±0.05° at any other angle.【Large Clear LED Screen with Audio Indicator】The digital magnetic level has a large, bright LED screen that can be automatically flipped, so you can easily read the measurement results even in the darkest space. In addition, we can also use the audio indicator to determine whether the horizontal ruler is in the horizontal or vertical position.【V-Groove Magnetic Base】The V-groove magnetic base is firmly attached to ferrous metal surfaces, such as pipes, pipes, steel frames and metal fabrication.Sturdy I-steel aluminum frame, neodymium magnets, rubber tips and dust/splash protection, suitable for harsh working environments【HOLD and ZERO Function】HOLD Function: The HOLD button can transfer the target value to other working areas. Zeroing function: It can be reset to zero at any time by pressing the REF button, and the horizontal absolute measurement and relative measurement of the measured object can be carried out.【Attention】Digital Angle Ruler is only suitable for two-axis measurement. When the third axis (i.e. the front and back of the level) and the horizontal stake are less than 30 degrees, the screen will display the error message "Err". When the battery icon is displayed on the screen, it indicates that the battery is low and the battery needs to be replaced.