Features High Visibility Design: Green color and black lines ensure clear visibility from all angles, making it easy to read the resolution for precise leveling. Accurate Leveling Indicator: The bubble inside the circle indicates when the object is level, providing a quick and reliable leveling reference. Enhanced Clarity and Precision: Made of high optical clarity material, featuring a three-line design for more accurate measurements, ensuring precise leveling. Convenient Pocket-Sized Tool: Handy small size allows for quick and convenient use anywhere, providing portability without compromising accuracy. Versatile 3D Printer Compatibility: This mini level ruler auxiliary tool platform balance ruler is specifically designed for 3D printer series leveling detection, ensuring compatibility and reliable results. Specification: Item Type: Level Bubble Ruler Material: ABS Product Function: Used for 3D printer leveling detection Package List: 2 x Round Ruler 2 x Cylindrical Ruler 2 x Cuboid Ruler Package List 2 x Round Ruler 2 x Cylindrical Ruler 2 x Cuboid Ruler