Enhanced Work Efficiency: The Laser Target Ruler is designed to boost productivity and minimize errors, ensuring precise level every time.Robust Magnetic Base with Level: Equipped with a strong magnetic base and convenient , this ruler can be positioned quickly and accurately. Aluminum Alloy Construction: Made with a thickened aluminum alloy, the ruler is drop-resistant, wear-resistant, and for easy portability.Double-Sided High-Precision Scale: Featuring a high-definition, double-sided scale, allows for quick accurate measurements and level finds.Versatile Tool Compatibility: Suitable for alignment laser level, crosshair laser, rotary laser, laser measurement. perfect floor and ceiling installation.Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Colour:BlackMaterial:Aluminum alloyPackage Contents:6x Tile Height RulerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.