基本信息
This 00-grade granite square box is a high-precision multi-purpose measuring tool for detecting squareness, flatness, and parallelism of mechanical parts. It is made of natural deep-mine granite, which has the advantages of high hardness, stable dimensional accuracy, and low thermal expansion coefficient. Compared with traditional cast iron square boxes, it has higher measurement accuracy and longer service life, and can maintain long-term stability in complex workshop environments. It is widely used in instrument calibration, precision machining, and aerospace manufacturing industries to solve the problem of inaccurate multi-angle measurement caused by tool deformation.
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