... , test force, and measuring the length of indentation, hardness, test dwell time, measuring number and input year,month ... for better material microstructure and brittle hardness of measurement.this is an ideal hardness testing instrument for research or measuring purposes. ... ,HV2,HV3,HV5,HV10Display:conversion to Rockwell,brinellDisplay5-digit Hardness value, 4-digit Diagonal length(D1,D2),dwell time ...