A granite surface plate will not rust or corrode over time, like surface plates made from metal or other materials. Granite surface plates can take more wear and tear than other materials and hold up longer over time. Granite surface plates will have less warping, smoother action, better accuracy and precision, and require less care after setting up. Since the surface plate is made from granite, it is non-magnetic, making it easy to work with various metals and materials.
A quartz or granite surface plate will have greater wear and tear resistance than alternative materials, allowing the surface plate to hold its accuracy for longer periods of time before it needs calibration services again.