<p>High precision Four different measurement units, with a wide range of applications to meet different needs. [Auto Sleep] This digital inclinometer will automatically turn off after 5 minutes to protect the battery without any operation. Magnetic BaseThe mini electronic level has a powerful magnetic base that can be easily and firmly attached to the object to be measured. [Powerful Function] Click the zero button to set the relative zero angle, then click the Hold button to keep the current reading displayed on the screen [Notes] When the measurement plane is irregular or there is a large gap between the measurement plane and the bottom of the product, return to zero. An error will occur. (The product is sold without batteries) This product is a new innovative angle and level measuring instrument with an LCD display for easy reading. Lightweight, easy to carry and use. It is especially convenient for measuring different angles, levels, tilt angles of miter saws, vehicle volume inspection and maintenance, etc. 1. Display resolution: 0.1 2. Precision error: +\/-0.2 (0-90), other precision errors 0.3 3. Measuring range : 490, 100-150-200 mm 3 lengths 4 Power supply: 2 x 3V CR2032 button batteries (batteries are not included when the product is sold) 5. The magnetic photo on the bottom measuring surface is the actual product and the color will be slightly different. Details are subject to the actual product, please understand! </p>