Universal
Universal hardness testers are in fact hybrid instruments allowing the user to make Rockwell, Vickers and Brinell hardness tests according to the applicable ISO, ASTM and JIS standards, with one single machine.
Universal hardness testers do not convert hardness values but apply tests according to standard procedures.
While most hardness testers in particular measure only one kind of scale either Rockwell or Vickers or Brinell, the Universal testers cover a wide range of test loads and measurement procedures.
