Florescent yellow-green color, precision centering with black lines, clearly visible resolution from all sides, easy to read. Accurate and square on all sides. The small pocket sized is perfect for quick use anywhere, makes adjusting more convenient and accurate and easy to use. Key points for use: The bubble inside the circle will tell that the object surface is level as the bubble shows in the middle of the circle. This level can be used in many , tripod, telescope, camera, you can glue this level on camera stand leveler, leveling , LCD mounts, adjust pictures//murals, wall clocks, turntables, record player, speakers, phonograph. RV, , travel trailer, furniture placement,office desktop, computer chassis, display,3D printer, can be professional measuring layout and normal usage. size: 10x10x29mm Material: acrylic colour: As shown Package Contents: 6 x Mini Bubble Spirit Level Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.