Natural granite has high hardness and is time-consuming to process, but the granite square products produced have ultra-high precision, good stability, and easy maintenance. Due to its high precision and stable physical performance, it is often processed into precision measuring tools for use.

Due to the special nature of the material, granite rulers need to be operated in a constant temperature and humidity environment. The temperature is 20+2C, and the relative humidity is controlled at 50% And avoid direct sunlight exposure. Before using a granite ruler for inspection and measurement, the granite ruler table should be cleaned thoroughly. It is best to wipe the table with a clean cotton cloth to avoid dust affecting the detection accuracy.

The granite square ruler that has been used for a period of time should be regularly calibrated for accuracy. The granite ruler should be placed in an environment with low noise, low dust, no vibration, stable temperature, and dry ventilation. When repeatedly measuring the accuracy of the same workpiece, it should be selected at the same time when the temperature is stable.