Bubble level, as a measuring tool that uses the relative position between the liquid surface and bubbles to calibrate the horizontal plane, is widely used in various fields such as engineering, construction, manufacturing, and surveying. Used to check whether the building walls, floors, roofs, glass curtain walls, etc. are horizontal or tilted, ensuring the stability and aesthetics of the building structure. Or when installing cabinets, wardrobes, bookshelves, and other furniture, ensure the levelness of the furniture to improve its usability and safety.