Find solid granite surface plate and angle plates at Grainger for use for precision layout, inspection and tooling setup. Use Grade AA laboratory plates for precision operations in constant temperature gaging rooms and metrology departments. Grade A inspection plates work fine for general quality control. Choose Grade A and AA plates in 4", 6", 8", 10" and 12" thicknesses and various surface dimensions. Various sized Grade B toolroom plates measure 4", 6", 8" and 10" thick. Use these for production checking work throughout your shop. Use granite angle plates to help you clamp and hold work in a vertical position. Also find granite straight edges, master squares, parallels, tri squares and more in a wide range of surface sizes and thicknesses. Grainger carries a large surface plate selection for your convenience in finding just what you need. Shop today!