Gear, shaft, and bearing manufacturers should choose hardness testing equipment based on real production parts, not only equipment catalogue specifications. Rockwell testing is efficient for fast HRC inspection, while Micro Vickers testing is important for case depth, hardened layer profiles, and small test areas. A complete solution may include Rockwell hardness tester, Micro Vickers hardness tester, metallographic sample preparation equipment, microscope, calibration blocks, indenters, fixtures, and report software. This gives the factory a more reliable workflow from production inspection to shipment approval. If your factory manufactures gears, shafts, bearings, or precision transmission parts, share your samples, heat treatment process, hardness standard, and reporting requirements before ordering. A complete recommendation can help avoid wrong equipment selection and improve long-term QC reliability.