●Product Name: Granite T-shaped groove platform
●Granite precision measuring tools and instrument platforms are made from high-quality "Jinan green" stone materials through mechanical processing and manual precision grinding. Black luster, precise structure, uniform texture, good stability, high strength, high hardness, able to maintain high precision under heavy load and general temperature, and has the advantages of non rusting, acid and alkali resistance, wear resistance, non magnetization, and invariance. Measuring tools suitable for mechanical factories.