【High Quality Material】: The square spirit level is made of special acrylic and ABS materials, it is as clear as crystal, and the measurement direction is easy to identify. When a bubble deviates from its central position, it is necessary to adjust the position of the object to bring the bubble back to its central position. 【Main Function】: This mini bubble level is mainly used to measure the levelness and verticality of objects. Check whether the tested object is parallel to the horizontal plane and whether it is tilted left and right. 【Easy to Use】: Just place the round spirit level bubble at the location where it needs to be measured. When the bubble level is placed on a horizontal surface, the bubble will stay in the middle of the tube, and you can determine whether the object is horizontal. 【Package List】: This stick on spirit level is small, easy to carry, store, and transport. With high accuracy, allowing for fast and precise measurements. There are two black lines inside, widely used for professional measurement and daily use. 【Widely Application】: Our measuring instrument layout tools widely used for leveling photo frames, art photo frames and murals, hanging paintings, set-top boxes, levels, pan heads, precision instruments and etc., Weight: 0.10582188576 Pounds, Manufacturer: MLMLH