Verification granite slab 1000x630 00 accuracy class

These products are used for markings, assembly and alignment of various mechanisms, accuracy control of manufactured parts, high-precision measurements. Their main feature is a perfectly flat surface, the permissible error is determined by the accuracy class. The main difference between granite slabs and cast iron ones is a long service life without wear and tear, as well as the complete absence of magnetic properties. Thanks to this in the process of operation they do not need to be subjected to periodic demagnetisation. It is used in industrial production and in locksmith shops to control the parallelism of surfaces of various parts. It has the form of a parallelogram of granite with a perfectly flat surface. Granite plate from the manufacturer does not have scratches, chips and other defects. The working surface is treated in such a way that it does not glare in natural and artificial light..