... And the tickof pointers is the hardness value of sample (specimen). In order to improve theaccuracy of measurement, you should putthe ... whenchecking,adjustitto“0’and“1002,The sample and adjustmentsThe specimen thicknesss houldbe in 25mm to 30mm,when insufficient thicknessOf 25mm,you ... points.Take out the skin of both sides of the specimen,the thickness should be uniform,smooth surface, micro-hole ...