Granite square (also known as marble square or granite square) is a special measuring tool for high-precision measurement and verticality detection. It uses natural black granite as raw material, and is made through cutting, grinding, manual scraping and long-term natural aging treatment. It has extremely high stability and wear resistance.
🪨 Material composition and performance basis:
Granite square is mainly made of natural granite, and its typical mineral composition includes:
- Quartz
- Plagioclase
- A small amount of olivine
- Biotite
- Trace magnetite
After millions of years of geological aging, the rock structure is uniform and dense, not easy to deform, has non-metallic properties, and is not affected by magnetic fields, making it an ideal material for manufacturing high-precision measuring tools.
📐 Main uses:
Granite squares are widely used in the following occasions:
- Verticality detection of workpieces
- Installation and positioning of mechanical parts
- Geometric accuracy inspection of CNC machine tools
- Line marking and reference marking
- High-precision detection in laboratories and industrial sites
It can be used as an inspection tool and as a positioning reference for equipment installation. It is particularly suitable for high-standard scenarios such as machinery manufacturing, mold assembly, and automation equipment adjustment.
🌟 Core features and advantages:
1. High stability
After natural aging treatment, the internal stress of granite is fully released and it is not easy to deform. It can maintain high geometric accuracy at room temperature and has a long service life.
2. High hardness and high rigidity
It has excellent compressive strength and rigidity, is not easy to scratch, has strong wear resistance, and is suitable for long-term heavy-load measurement and use.
3. Corrosion-resistant, maintenance-free
Granite itself is resistant to acid and alkali corrosion, does not rust, does not need to be oiled, and is not easy to absorb dust. It is simple to maintain and does not affect environmental hygiene.
4. Good measurement adaptability
Not affected by changes in ambient temperature, humidity and magnetic field, with high surface finish and smooth measurement process, ensuring accurate and consistent measurement results.
5. Non-magnetic and non-conductive
Due to its non-metallic properties, it will not interfere with the object being measured when detecting electromagnetic sensitive components or magnetic materials, and is suitable for use with precision electronic equipment.
🧩 Summary:
Granite square ruler is a high-precision, low-maintenance, long-life modern measuring tool that plays an irreplaceable role in many industries such as machinery manufacturing, mold processing, metrology laboratories, and optical testing. It provides reliable guarantees for precision processing and quality control with its advantages of high precision, strong stability, and excellent corrosion resistance.