Specifications: Material: Acrylic. Color: Fluorescent Yellow-green. Size: Diameter: 60mm. Thickness: 12mm. Division Line Color : Black (with 1,2,3 circular scale). Type: Round. Package Included: 1PC x Bubble Degree Marked Surface Level. How to use? When bubble in the middle, is the balance status. Easy to read and easy to use. (The bubbles can be gathered within 2 second after impact when using). Bubble level can be professional measuring layout and normal usage. This levels Measuring Instruments Layout Tool Designed to level surfaces in all directions. More convenience for you to adjust the level to the accurate angle. Features: Universal levels Measuring Instruments Layout Tools Designed to level surfaces in all directions. This surface level is ideal for leveling/adjust Camera, Tripods mounts, Stereo Turntables, Record Player, Speakers. For leveling/adjust Phonograph, Telescope, Automount Telescope, Scope, RV, Camper Van, RV fridge, RV refrigerators, Motor home, Motorhome, Travel Trailer. For leveling/adjust Shelf, PicturesPhoto, Frame, Murals,Hanging picture, Calendar, Toys, Furniture placement, perfect for use at home, to do home settings, Level Air Conditioned House, Refrigerator, Fridge,Tables, Shelves. For leveling/adjust Pool tables, Appliances, Instrument,Device,Equipment, Structures of Cross Axi, Shop machines, Leveler Blocks, Construction, Woodworking tools, Carpentry measuring, Factory Machinery and Other Equipment,Etc. Available for all requirement areas, makes adjusting more convenient and accurate. For leveling/adjust LCD mounts,Set-top boxes, Hanging box. For levelling/adjust Office desktop, Computer chassis, case display, Computer monitors, 3D Printer Office machine.