Marble Straightedge And Granite Straightedge: Characteristics And Advantages

Introduction to Marble Straightedge and Granite Straightedge

Detailed Description of Marble Straightedge

The granite straightedge (marble straightedge) adopts a vertical-parallel frame-type combined structure, suitable for high-precision inspection of mechanical equipment and instruments, as well as detection of non-perpendicularity between machine tools. It serves as an essential tool for inspecting the non-perpendicularity of internal components in various machine tools.

Characteristics and Advantages of Granite Straightedge (Marble Straightedge)

1. Stable Structure: After long-term natural aging, the rock features a uniform organizational structure, an extremely low linear expansion coefficient, complete elimination of internal stress, and high resistance to deformation.

2. Superior Performance: Good rigidity, high hardness, strong wear resistance, and minimal thermal deformation.

3. Easy Maintenance: Resistant to acid and alkali corrosion, non-rusting, no need for oiling, not prone to dust adhesion. Even after one year of storage, it can maintain original accuracy, ensuring simple maintenance and a long service life.

4. Strong Environmental Adaptability: Scratch-free surface, unrestricted by constant temperature conditions, and capable of maintaining measurement accuracy at room temperature.

5. Precise Measurement: Non-magnetic, allowing smooth movement without stalling during measurement, unaffected by humidity, and with stable flatness.

Physical Properties of Granite Straightedge (Marble Straightedge)

• Specific Gravity: 2970-3070 kg/m³

• Compressive Strength: 2500-2600 kg/cm²

• Elastic Modulus: 1.3-1.5×10⁶ kg/cm²

• Water Absorption Rate: <0.13%

• Shore Hardness: HS70 and above

Product Description of Our Company

The granite precision measuring tools produced by our company are made of high-quality natural granite, processed by mechanical equipment and finely ground by hand. The products feature a black luster, precise structure, uniform texture, good stability, high strength and hardness, and advantages such as rust resistance, acid and alkali resistance, non-magnetism, non-deformation, and excellent wear resistance. They can maintain stable performance under heavy loads and at room temperature.