Marble ruler

Purpose of marble ruler: to measure the straightness and flatness of workpieces and equipment installation. Flatness and straightness of machine tool worktable, guide rail, and work.

The material of the marble ruler is Jinan blue, and the marble ruler has a black luster, uniform structure, good stability, and high strength,. A marble ruler is a reference measuring tool made of high-quality stone material, which is an ideal reference surface for inspecting instruments, tools, and mechanical parts, especially for measurement purposes.

The marble ruler is made from underground rock layers, and after billions of years of natural aging, its shape is extremely stable, without worrying about deformation due to conventional temperature differences.

The marble ruler has undergone rigorous physical testing and selection of granite material, which has fine crystallization and a hard texture. Due to its non-metallic nature, granite exhibits magnetic reactivity and no plastic deformation. Therefore, it has good accuracy retention.

Even if a rock tool is hit by heavy objects during use, a marble ruler can only drop a few pieces of gravel at most. The marble ruler is superior to measuring reference parts made of cast iron and steel, and can achieve high and stable accuracy. The marble ruler produced by our company can maintain its original accuracy even after being stored for one year.

Characteristics and advantages of marble ruler:

1. After long-term aging, the rock has a uniform organizational structure, low coefficient of expansion, disappearance of internal stress, and no deformation, therefore.

2. Good rigidity,.

3. Not afraid of acid and alkali erosion, will not rust, does not need to be oiled, is not easy to stick to dust, easy to maintain, and has a long service life.

4. No scratches, not hindered by constant temperature conditions, and able to maintain temperature measurement accuracy at room temperature.

5. Non magnetized, able to move smoothly during measurement, without any sluggishness, unaffected by moisture, and with good flatness.