Granite square ruler

Granite rulers are mainly used to inspect the flatness of components. Granite measuring tools are basic instruments used in industrial inspection, suitable for the inspection and measurement of instruments and mechanical components.

Granite rulers are mainly composed of granite minerals, including pyroxene, plagioclase, a small amount of olivine, biotite, and trace amounts of magnetite. They have a black color and structure, and after billions of years of aging, their texture is uniform, stable, strong, and can be maintained under heavy loads. Suitable for industrial production and laboratory measurement work.

Characteristics and advantages of granite square ruler

1. Granite ruler has a dense organizational structure, smooth surface, and low roughness values;

2. After long-term aging, the internal stress of granite disappears, the material is stable, and it will not deform;

3. Acid resistant, alkali resistant, and magnetic resistant;

4. Will not get damp or rust, easy to use and maintain;

5. The coefficient of linear expansion is small and less affected by temperature;

The characteristics of granite square ruler: The granite square ruler is made of "Jinan green" stone material through mechanical processing and manual precision grinding. Black luster, structure, uniform texture, good stability, high strength, can be maintained under heavy loads and general temperatures, and has advantages such as non rusting, abrasion resistance, non magnetization, and non deformation. The mechanical properties of granite rulers: Granite rulers are not easily deformed, rust prone, easy to use, and widely used for inspection and measurement. Granite rock rulers are made of materials such as fine-grained gray cast iron or alloy cast iron, with a working face and side hardness of 170-220HB. The working face should be ground using grinding technology. Granite rock ruler is suitable for equipment installation, commissioning, construction, decoration and other industries.