What is the accuracy of German industrial squares?

0.002 mm. German industrial squares are processed by high-precision machine tools to ensure that the size and shape of each square meet strict standards. This high precision is not only reflected in the size of the square, but also in its manufacturing process and material selection. In addition, German industrial squares also use high-quality materials, such as high-hardness steel or aluminum alloy, to ensure its wear resistance and corrosion resistance.