Granite platform slabMarble slabs are precision reference measuring tools made of natural stone materials. Marble slabs are ideal reference surfaces for the inspection of instruments, precision tools, and mechanical parts, especially for high-precision measurements. Marble slabs are made from high-quality underground rock layers, which have undergone billions of years of natural aging and have a stable shape, without worrying about deformation due to conventional temperature differences. The marble slab has undergone rigorous physical testing and the selection of granite material, resulting in fine crystallization and a hard texture. Due to its non-metallic nature, marble has no magnetic reaction or plastic deformation. Marble slabs have high hardness, resulting in good precision retention. Even if the rock tools on the marble tablet are bumped by heavy objects during use, at most a few pieces of gravel will fall off. Marble slabs are superior to precision measuring reference parts made of high-quality cast iron and steel, and can achieve high and stable accuracy. The 1000 × 630mm '00' grade marble slabs produced by our company can still maintain their original accuracy after being stored for one year. Marble slabs have the advantages of high precision, rust resistance, acid and alkali resistance, non magnetization, invariance, and good wear resistance. Marble slabs can maintain stability under heavy loads and general temperatures. The precision measuring tools for marble slabs produced by our company are made of high-quality natural granite platform materials that have been mechanically processed and hand polished. Marble slab specifications (mm) weight Kg accuracy level 000 accuracy level (um) 00 accuracy level (um) 0 accuracy level (um) 1 accuracy level (um) 300 × 200 × 50141.535.511300 × 300 × 50191.535.511400 × 300 × 702123612400 × 400 × 100482356.513500 × 400 × 1007623.5714600 × 500 × 13015524816800 × 500 × 130156248161000 × 630 × 1502842.545911000 × 750 × 1503382.545911000 × 1000 × 1504502.5510201200 × 800 × 1504322.5510201500 × 1000 × 2009603612242000 × 1000 × 25015003.56.513262000 × 1500 × 30028803.5714282500 × 1500 × 30036004816323000 × 2000 × 40090004.591836