Plates calibration granite MarTool 400х250

MarTool granite scalibration plate 400x250mm 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