... accuracy,low cost 4.3 years warranty Protable rockwell hardness gauge HZ-2507A Equipment discription:PHR Series Portable Rockwell / Superficial ... HRA,HRB,HRC,HRD,HRE,HRF,HRG,HRK,HRH nine gauge choice. Test range from very soft aluminum, lead, zinc ... iron, aluminum, magnesium alloy, bearing alloys.1/8 steel ballE100BAnnealed brass, copper, aluminum, mild steel sheet.1/16 steel ballF60BBronze, phosphor ...