It has the following five advantages:
1. Not afraid of acid, alkali erosion, no rust, no need to oil, not easy to stick to dust, maintenance, easy and simple, long service life.
2. There will be no scratches, which is not prevented by constant temperature conditions, and the accuracy of temperature measurement can be maintained at room temperature.
3. Non-magnetization, smooth movement during measurement, no sense of stagnation and astringency, not affected by humidity, the plane weighs well.
4. After long-term natural aging, the rock structure is uniform, the linear expansion coefficient is very small, the internal stress disappears completely, and the deformation is not changed, so the accuracy is high.
5. Good rigidity, high hardness and wear resistance.