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Status : Active
Standard Type : Main
Document No : ISO 4545-2:2017
Document Year : 2017
Pages : 18
Edition : 2
Section Volume : Hardness testing (ISO/TC 164/SC 3.)
A direct method of verification and calibration is specified for the testing machine, indenter, and the diagonal length measuring system. An indirect verification method using reference blocks is specified for the overall checking of the machine.
If a testing machine is also to be used for other methods of hardness testing, it will be verified independently for each method.