The precision electric (surface) Rockwell hardness tester DigiRock MR2/MS2 adopts a Rockwell dial with 0.5HR indication division, which improves the accuracy of the instrument's indication reading; DigiRock MR2/MS2 adopts a touch control panel, which can freely set the holding time for testing; The DigiRock MR2/MS2 body is constructed with 10MM cast iron, which is sturdy, durable, and suitable for various harsh environments; DigiRock MR2/MS2 controls the loading, holding, and unloading of experimental forces through motors, eliminating manual Rockwell operation errors; DigiRock MR2/MS2 optional indenter protection device can effectively improve the service life of the indenter.