GNU is the new fine black granite used by Microplan® Group for high precision structures manufacturing. Better mechanical properties, greater dimensional stability, improved accuracy in the geometry, excellent results of flatness, best roughness, lower porosity, excellent appearance.
Due to its unique properties, Afrika black granite is used extensively in the field of measuring instruments, both for standard ones (surface plates, rules, set squares, cubes, etc.), as well as for CMM Coordinate measuring machines, machines bases and structures according to drawing.
Due to its physical properties, Alumina (Ceramic) allows to realize high precision instruments, of small and medium sizes (up to 2500 mm of length). Alumina instruments are made in the French workshop of Microplan France.