NTMT Black Granite Surface Plates, For Industrial, Certification : ISI Certified

granite surface plate (as per is 7327 – 2003)

             ntmt granite surface plates are as a precision datum base for

inspection, tool marking, gauging, spotting, marking and layout operations.

    material:  granite surface plates are made from selected granites with uniform distribution       of light and dark constituents. It has a fine grind, non porous texture and grind size measures less than 1 mm. It has a constant hardness throughout 6 to 6.5 moss scale and 3 times harder than cast iron surface plate. It has very lowest thermal co-efficient of expansion, 100% rust proof and acid resistance, non electric-conductive and easy to clean. Maintenance costs are practically nil. If may chip but cannot develop a burr.