Precision granite surface plates are crafted from high-quality granite through mechanical processing and meticulous hand-finishing. With a sleek black luster, these plates feature a dense, uniform structure, exceptional stability, and strength over twice that of cast iron. They offer numerous advantages, including resistance to rust, acids, and alkalis, non-magnetization, no warping or deformation, and excellent wear resistance. The plates maintain stability under heavy loads and typical temperatures, making them ideal precision reference tools. They serve as an excellent baseline for inspecting instruments, precision tools, and mechanical components. Particularly suited for high-precision measurements, their unique properties far surpass those of cast iron plates.