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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

The granite square ruler produced by Jinan East Star Precision Measure Co.，Ltd. is made of natural stone such as "Jinan Qing", which is processed by machinery and manually ground. It is mainly used to detect the straightness, parallelism, and perpendicularity of high-precision components, and can also be used as a 90 ° measurement benchmark. It is an ideal benchmark for inspecting instruments, precision tools, and mechanical parts.

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.