High precision granite marble master square

Marble marble measuring meters are important, is a frame with vertical parallel combination, suitable for high precision machinery and instrument not verticality between inspection and machine inspection, all items within the machine tool is used to check not vertical degree is an important tool. Manufacturing standard: according to standard GB6092-85. Marble meters of parallel vertical degree. Meters main mineral elements for escape stone, marble, plagioclase, a small amount of olivine, biotite, and trace magnetite, black color, structure, precision code, after one hundred million years of aging, uniform texture, good stability, high strength, hardness, can maintain under heavy load and high precision. Marble feet is suitable for industrial production and laboratory measurements. Marble meters with vertical parallel frame combination used to orthogonal test, suitable for high precision machinery and instrument not verticality between inspection and machine inspection. Meters is the use of natural marble marble processing and become, Dali