Marble flat feet Uses: mainly used in the machine table, guides and precision face flatness, straightness measurement. 
 The marble feet of flat material: Jinan blue, black gloss, structural precision, even texture, good stability, high strength, high hardness. Precision reference measurement tools made of natural stone materials, instrumentation, precision tools, mechanical parts of the test, is an ideal plane, especially for high-precision measurements. 
 Marble square foot based on the underground quality of the rock layer, after millions of years of natural aging, the shape is very stable, do not worry deformed due to the conventional temperature difference. Marble square foot by the rigorous physical tests and selection of granite materials, fine crystalline, hard texture. The granite of non-metallic material, no magnetic response, and no plastic deformation. Its high hardness, and therefore to maintain good accuracy. Rock tools in use heavy objects bump up out a few grains of stone ballast. Marble flat foot better than the precision measurement of high-quality cast iron and steel production benchmark parts, to obtain high and stable accuracy.