Granite square ruler
Specifications / Features
Main mineral components of Granite square ruler, plagioclase, only small amounts of olivine, biotite, and trace magnetite, black color, precision construction, uniform texture, good stability, high strength, high hardness, maintain the high accuracy under the heavy load.The characteristics and advantages of Granite square ruler:
1, good rigidity, high hardness, wear resistance
2, the rock by the long-term natural aging, the organization structure is even, the linear expansion coefficient is small, the stress completely disappeared, not deformation, so high precision.
3, are not afraid of acid, alkali erosion, will not rust without oiling, not easy to stick dust, maintenance, convenient and simple maintenance, long service life.
4, no magnetization measurements can move smoothly, without Zhise sense, not wet, plane said good.
5, there will be no scratches, not by the constant temperature conditions to prevent, at room temperature can also maintain the accuracy of temperature measurement.
