Marble measuring box

The marble measuring square box is mainly used to check the parallelism and perpendicularity of parts and support the workpiece when marking. It is generally a cube or cuboid with the same side length

marble measuring square box: it is a detailed benchmark measuring tool made of stone materials. It is an ideal benchmark for the inspection of instruments, detailed tools and mechanical parts. The marble measuring square box is especially used for the measurement with appropriate accuracy. The marble measuring box is taken from the excellent underground rock layer. After hundreds of millions of years of natural aging, the shape is extremely stable. There is no need to worry about deformation due to conventional temperature difference. The granite box produced by our company also has the advantages of good precision, no rust, based on the actual report, non magnetization, constant type, powerful and so on. It can maintain stability under heavy load and general temperature

marble measuring square box: even if it is knocked by heavy objects in use, at most a few stones will fall off. Granite square box is superior to the detailed measurement reference parts made of excellent cast iron and steel, and can obtain high and stable accuracy

inspection method of marble measuring square box:

for the marble measuring square box with side length of 300mm and below, during the verification process, a 1mm measuring block shall be placed at both ends of the tested surface of the marble measuring square box, and the knife edge ruler shall be placed on the workbench. The gauge block surface, and then use the gauge block to test the plug at each inspection point. The difference between the size of the equivalent block group just inserted and the size of the measurement block at both ends is the deviation between the checkpoint and both ends. Verification shall also be carried out in the longitudinal, transverse and diagonal areas of the marble box working face. When the error direction of the measured straight line is the same, the value is -. When the error directions are different, take the sum of values - positive difference - and - negative difference - as the flatness of the plane of the inspected surface