Granite angle ruler, granite square, marble square-Gaotang Ruijing Precision Machinery Co., Ltd

Granite angle ruler is used for detection, measurement, marking off, equipment installation and industrial engineering co...

Granite square is suitable for testing verticality. The plane accuracy standard gb6092-85 and the perpendicularity standa...

Marble square is suitable for industrial production and laboratory measurement, as well as detection, measurement, markin...