Features Clear Visibility Design: Green color with contrasting black lines ensures easy reading from all angles for accurate leveling results Accurate Leveling Indicator: The bubble centers within the circle, providing a quick visual confirmation that your object is perfectly level Premium Optical Clarity: Crafted from high-quality, transparent material with a three-line design for precise measurements every time Compact and Portable: Small pocket-sized design allows for quick and convenient use anywhere, enhancing accuracy in various settings Versatile Compatibility: Ideal for leveling detection across various 3D printer models, making it an essential measuring tool for enthusiasts Features: 1、Green color, centering with black lines, clearly visible resolution from all sides, easy to read. 2、The bubble inside the circle will tell that the object is level as the bubble shows in the middle of the circle. 3、High optical clarity material, high transparency, three？line design, more accurate measurement. 4、The handy small pocket sized is for quick use anywhere, makes more convenient and accurate. 5、Mini level ruler auxiliary tool platform balance ruler is suitable for 3D printer series leveling detection. 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