Advantages and Characteristics of Marble Square Boxes

The organizational structure of the marble square box is dense, the surface is smooth, and the roughness value is small. After long-term aging, the internal stress of marble disappears, making the material stable and not deformed. Due to the fact that marble non-metallic materials do not undergo plastic deformation.

Marble square boxes have the advantages of non rusting, non magnetization, and good stability under heavy loads and general temperatures.

Marble square box is a benchmark measuring tool made of stone material. Even if it is bumped by heavy objects during use, at most a few stones will fall off. It will not affect the accuracy of use.

Verification method for marble square box: For square boxes with a side length of 315mm or less, 1mm measuring blocks are placed at each end of the inspected surface of the square box during verification. A straight edge shaped ruler is placed on the working surface of the measuring block, and then a measuring block is used to test the plug at each inspection point. The difference between the size of the measuring block group just inserted and the size of the measuring blocks at both ends is the deviation between the two ends of the inspected point. This verification should also be conducted on several sections of the square box working face in the longitudinal, transverse, and diagonal directions. When the error directions of the straight lines measured at various positions are consistent, take their values. When the error directions are not consistent, take the sum of their positive and negative differences to obtain the flatness of the inspected surface plane.