400mm Digital Spirit Level - Audio Indicator and LED Display - Precise Angle Measurement with Magnetic Base - Measuring Tools

【High-Precision Digital Level】 4 measurement modes: degree measurement, in/ft increments, mm/m, and percentage slope. High accuracy: ±0.1° at 0° and 90°, and ±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 features a large, bright LED display that automatically switches between colors, allowing you to easily read measurement results even in low light. Additionally, the audio indicator confirms whether the level is horizontal or vertical. 【V-Groove Magnetic Base】 The V-groove magnetic base securely attaches to ferrous metal surfaces, such as pipes, tubing, steel frames, and other metal fabrications. Robust aluminum frame made of steel I, 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 work areas. Zero function: It can be reset to zero at any time by pressing the REF button, and absolute horizontal and relative measurements of the object being measured can be performed. 【Caution】 The Digital Angle Ruler is only suitable for two-axis measurements. When the third axis (i.e., the front and back of the level) and the horizontal axis are less than 30 degrees, the screen will display the error message "Err". When the battery icon appears on the screen, it indicates that the battery is low and needs to be replaced.