[High Optical Clarity Material]: The use of special acrylic and ABS materials, so that it is as clear as crystal, horizontal direction at a glance [High Accuracy]: High precision, and easy to use, fast and accurate; Precision machined internal radius, Black lines, internally fitted gives minimal parallax errors [Scope of Application]: The mini square spirit bubble level is is widely used in level, camera head, precision instruments, etc. and used to adjust the LCD mounts, set-top boxes, hanging box level, adjust the frame level, adjust the mural level [Practical]: Manufactured by Fine workmanship, the mini bubble spirit level is practical and extremely beautiful [Dimension]: Size: 15 * 15 * 40mm / 0.6 * 0.6 * 1.6in; Package Included: 5 x Bubble Level