... laboratory ,factory and othere department. Technical parameter:ModelHZ-2504C Digital video device of micro hardness testing machineMicro Vickers scaleHV0.01 ... HV0.025, HV0.05, HV0.1. HV0.3, HV0.5, HV1 conver the scale to rockwell,BrinellDisplayHardness value of ... controlAutomatic (loading / Hold / uninstall) test force dwell time 5 ~ 60 seconds (1 second increments)Test forceOption the extermal forces ...