Enhanced Work Efficiency: The Laser Target Ruler is designed to boost productivity and minimize errors, ensuring precise leveling every time. Robust Magnetic Base with Level: Equipped with a strong magnetic base and built-in level, this ruler can be positioned quickly and accurately. Aluminum Alloy Construction: Made from thickened aluminum alloy, the ruler is drop-resistant, wear-resistant, and lightweight for easy portability. Double-Sided High-Precision Scale: Features a high-definition, double-sided scale for quick and accurate measurements and leveling. Versatile Tool Compatibility: Suitable for use with alignment laser levels, crosshair lasers, rotary lasers, and laser measurement tools, ideal for floor and ceiling installation. Color: Black Material: Aluminum alloy Package Contents: 6 x Tile Height Ruler Note: The package includes only the items listed above; other products are not included. Note: Light reflection and different displays may cause slight color variations between the item and the image. Measurement error allowance is +/- 1-3 cm.