HBRVUD-187.5 is a digital Brinell Rockwell and Vickers hardness tester manufactured by United Test. This device uses 3 testing methods, with a 7-step test force that meets diverse test requirements. It is characterized by its attractive appearance, easy operation, clear, and direct display. Various mechanic, electric, and optical features are combined in one model, complete with a micro-printer for displaying test results. It also features a free adjusting dwell time for hardness test. The tool is equipped with RS232 serial communication port. Total height of test specimen measures either 140mm or 200mm, with a width that measures 165mm. This machine functions with power rating of AC 220V.