Granite ruler is mainly used for measuring the flatness and straightness of machine tool workbenches, guide rails, and precision working surfaces.
The material of the granite ruler is Jinan blue, with a black luster, precise structure, uniform texture, good stability, high strength, and high hardness. It is a precision reference measuring tool made of natural stone materials, which is an ideal reference surface for the inspection of instruments, precision tools, and mechanical parts, especially for high-precision measurement.
Characteristics and advantages of granite ruler:
1. Rocks undergo long-term natural aging, with uniform organizational structure, extremely low coefficient of expansion, complete disappearance of internal stress, and no deformation, resulting in high accuracy.
2. Good rigidity, high hardness, and strong wear resistance.
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.
Specifications（mm） | Straightness or flatness of the working surface | Parallelism between working faces | ||
Accuracy level（μm） | ||||
00 | 0 | 00 | 0 | |
500×100×40 | 1.6 | 2.6 | 2.4 | 3.9 |
750×100×40 | 2.1 | 3.5 | 3.2 | 5.3 |
1000×120×40 | 3.0 | 5.0 | 4.5 | 7.5 |
1500×150×60 | 4.4 | 7.4 | 6.6 | 11.1 |
2000×200×80 | 5.4 | 10.0 | 8.1 | 13.5 |
3000×200×80 | 8 | 16 | 12 | 24 |
Name*
*Email
Phone
Message
*