Digital rockwell hardness tester

Introduction
GL-HRS-150B Heightened Digital Rockwell Hardness Tester \| Precision Testing
Fully Automatic Full Scale Rockwell Hardness Tester GL-10MHRS-150J
Digital Rockwell and Superficial Rockwell Hardness Tester full scale GL-HRSS-150
Digital rockwell hardness tester for metals automatic 8inch Touchscreen GL-8MHRS-150H
Digital rockwell hardness tester with Touchscreen GL-MHRS-150