Features: The height ruler is selected from aluminum body, which is not easy to be damaged and fall-proof. The height tape is lightweight and easy to carry, ensuring accurate measurements,suitable for construction sites. Our height ruler is equipped with independent bubble function to help you easily and accurately locate precise horizontal height. This ruler features enlarged ABS base that provide tile stability, preventing any unwanted movement during installation and ensuring even tile alignment. This ruler have a precise scale for accurate positioning and precise measurement of tiles when laying floor tiles. Specifications: Component:Aluminium Size:Approx.8x7x7cm/3.15x2.76x2.76inch Package Includes: 1Pc Equal Height Ruler note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.