Selecting a hardness tester for heat treatment quality control should start from the actual process and inspection purpose. Rockwell testers are highly practical for fast batch inspection after quenching and tempering. Vickers and Micro Vickers testers are better for precision testing, case depth analysis, carburized layers, nitrided layers, and hardness profiles. Brinell testers may be suitable for large heat-treated castings and forgings. Buyers should not compare only price. They should evaluate hardness method, scale, load range, sample size, fixtures, calibration blocks, automation level, sample preparation needs, and data reporting functions. A well-selected tester helps improve production control, reduce quality disputes, and provide reliable documentation for customers. If your heat treatment process involves multiple materials and hardness requirements, a complete solution may include Rockwell testing for fast production checks and Micro Vickers testing for detailed layer analysis.