Plates calibration granite MarTool 630х400

MarTool granite scalibration plate 630x400mm in size is used for measuring, marking and grinding precision parts.

Made from selected fine-grained black granite (diabase)
High density structure, extremely homogeneous
Hardness 6–7 on the Mohs hardness scale
100% corrosion resistance
Non-magnetic and non-conductive properties
Measuring instruments and test equipment glide easily over the surface