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The Portable Leeb Hardness Tester is a high-performance, industrial-grade testing device designed for on-site and flexible metal hardness measurement across diverse sectors. It stands out with a high accuracy of 99.90%, ensuring reliable and precise results, while its measuring range of HLD (170~960) HLD covers most industrial metals and alloys—additionally, it supports conversion to common hardness scales like Brinell, Rockwell, and Vickers, adapting to various testing standards.