Beautiful : Green ABS plastic measuring tools, exquisite workmanship, practical and very beautiful. Application: ABS materials are used to make the measuring tool as clear as crystal, and the horizontal direction is clear at a glance. Easy to use: 5 pieces of 10 x 10 x 29 mm square measuring tools have high accuracy. These small levels are easy to use, fast and accurate. Application: This square mini bubble is suitable for levall, cameras, precision instruments, etc. Product name: 10 x 10 x 29mm small Square horizontal bubble, material production level measuring instrument, leveling bead measuring level tool. Applicable environment: Calibration of picture frames, picture frames, frames, art frames and murals when hanging, to determine whether they are horizontal or parallel. Use points: Place it at the edge of the body to be measured, and the middle bubble is horizontal. Size: 10 x 10 x 29mm Material: ABS Color: as shown Features: crystal-like crystal clear, fine workmanship, practical, extremely beautiful; high precision, easy to use, fast, accurate, home handicraft display and storage Package Contents: 5 x universal horizontal Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.