220V AC Rockwell Hardness Tester

220V AC / 50Hz / 60Hz HRS-150 Rockwell Hardness Tester RS232 Output Digital Display The HRS-150 Rockwell hardness tester is designed for ease of use and safety in operation and conforms with the international Rockwell standard. Depending on the combination of indenter type and applied total test force, a unique symbol is given to each Rockwell scale. The HRS-150 will automatically show your selection of a specific Rockwell scale on the LCD display, and indicate which load is