基本信息
This 0-grade granite square box is a multi-functional precision measuring tool made of high-quality Jinan Qing granite, mainly used to detect the verticality, parallelism and square error of multiple surfaces of workpieces. It has six accurate right-angle surfaces, which can meet the needs of multi-directional detection, and has the advantages of stable performance, wear resistance, no magnetic and easy to clean, making it an ideal tool for precision metrology and machining inspection scenarios.