[feature] 【V-groove Magnetic Base & Built-in Level】The magnetic base of the inclinometer has a strong V-shaped groove, which can be easily and safely attached to various tools and materials, such as miter saws, band saws, table saw blades, metal bars , and round tubes. Slotted lines on the sides make measuring and marking a breeze. Plus, the built-in leveling bubble bottle on top allows for leveling work without batteries. 【Auto Reverse Display & Save Battery】When the angle gauge is turned upside down, the inclinometer display will automatically reverse for added convenience. Additionally, the digital angle level automatically turns off after 3 minutes of inactivity to conserve battery life. 【WIDE APPLICATIONS】The digital goniometer can be used not only for woodworking projects, but also for calculating helicopter/bevel angles, miter saw angles, and car testing and repairing. It can come in handy for a variety of tasks around the house, such as hanging pictures on the walls, finding a flat surface while camping, and placing decorative tiles in the garden. [product information] Product Name: Mini Digital Inclinometer Color: Refer to pictures Material: Plastic Size: Width 62mm Battery type: 2 x AAA7# battery Packing list (obtainable after purchasing a product): mini digital display inclinometer*1 (battery not included beg to be excused: 1. Due to the long shipping time, the item may be damaged during the transportation, if the item is damaged, please leave us a message through the official website immediately before leaving a comment, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Color may vary by monitor.