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In the fields of precision manufacturing, machining, measurement and testing, etc., accuracy is the core requirement, and a high-quality measurement reference tool is a key prerequisite for ensuring accuracy.With its unique advantages of natural materials, granite square rulers have become th

Granite square, also known as granite square or inspection square, is a reference measuring tool used to check the verticality of workpieces in mechanical processing, inspection and assembly. It occupies an irreplaceable position in the field of precision manufacturing due to the natural prope

花岗石方尺又称大理石方尺，是一种精密基准测量工具。 东星量仪生产的花岗石方尺选用 “济南青” 等天然石材，经过机械加工及手工研磨制成的，主要用于检测高精度零部件的直线度、平行度及垂直度，也可作为 90° 测量基准，是对仪器仪表、精密工具、机械制件进行检验的理想基准面。 产品特性 精度高：花岗石方尺取材于经过亿万年自然时效的地下优质岩石层，其组织结构均匀，线胀系数极小，内应力完全消失，因此具有不变形、精度高的特点。 硬度高：主要矿物成分为辉石、斜长石等，质地坚硬，结晶细密，耐磨损。 耐腐蚀性强：花岗石方尺具有不生锈、耐酸碱的

Granite measuring tools mainly include flat plates, right angle rulers, square rulers, flat rulers, square boxes, V-shaped blocks, parallel gauges, etc. The following are their specific introductions.

The 19th China International Machine Tool Exhibition (CIMT2025) will be held in Beijing from April 21 to 26, 2025. As an enterprise that has been deeply engaged in the field of new materials for many years, Shandong Nano New Material Technology Co., Ltd. （Jinan East Star precision measuring instrument Co., LTD）will bring its mineral castings products, granite air flotation products, static guide products, and granite measuring tools products to the exhibition, we are looking forward to your visit at Beijing International Exhibition Center (Shunyi Hall)B5-512.