Shandong Shancai Testing Instrument Co., Ltd., is a renowned manufacturer and factory in China, known for producing high-quality and reliable testing instruments. One of the products that our company offers is the Rockwell hardness scale. The Rockwell hardness scale is a durable, accurate, and easy-to-use tool that measures the hardness of materials. It is widely used in various industries, including aerospace, automotive, construction, and manufacturing. Our Rockwell hardness scale is manufactured with precision, ensuring that it delivers accurate and reliable results every time. As a leading manufacturer and factory, we are committed to providing our customers with the best possible products and services. We use only the highest quality materials and the latest manufacturing techniques to produce our products. In summary, if you are looking for a Rockwell hardness scale, look no further than Shandong Shancai Testing Instrument Co., Ltd. Our product is durable, reliable, and accurate, and is sure to meet all of your testing needs.