Features: Double Bubble Design with Magnetic Base: The double bubble levels, paired with a magnetic base, is suitable for ceiling and tiles leveling, ensuring precisely positioning. Extended 30cm: The extended design facilitates operations, easily adjusts to the horizontal height, and enhances work efficiency. Strong magnetic: Equipped with a built-in powerful magnet at the bottom, it can firmly attach to the ceiling joist, facilitating installation and measurement. Precision Scale: Features a double-sided, clearly marked design for easy reading, enhancing measurement accuracy and meeting professional requirements. Wear resistant aluminum alloy: The thickened aluminum alloy ruler body is drops-resistant and wear-resistant, lightweight for easy portability, suitable for various construction environments. Specifications: Component:ABS,Aluminum Alloy Size:Approx. 31.5cm/12.4''x6cm/2.36'' Package Includes: 1Piece Equal Height Ruler note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.