Always 400mm/16inch Digital Spirit Level with Digital Audio Indicator Spirit Level-Finder Angle Aluminum Alloy with Magnetic Base Measuring Tools Angle 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 Display with Audio Indicator】The digital magnetic level has a large, bright LED display that can be automatically switched, from 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 a horizontal or vertical position.【Magnetic V-Groove Base】The magnetic V-groove 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: HOLD button can transfer the value target to other work 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 measurement on two axes. 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.