Tile Tiling Artifact High-Precision Pointer Tilting Level Multifunctional Slope Measuring Tool characteristic Check the angle from 0 to 90. Accurate to 0.5 degrees Magnetically adsorbed on the metal square for easy reading. Use self-threaded screws (Not included) to install on non-metallic squares. describe Name: slope measuring instrument Material: metal+plastic Color as shown Quantity: 1pc Used for angle measurement of automobiles, carpentry, construction, drilling machinery, etc. Package Contents: 1 x Slope measuring instrument Only 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.