CONTENTS Foreword Introduction 1 Scope 2 Normative References 3 General Conditions 4.1 General 4.2 Calibration of the test force 4.3 Verification of the indenter ball 4.4 Calibration of the measuring system 4.5 Verification of the testing cycle 5 Indirect Verification 6 Intervals between Verifications 6.1 Direct verifications 6.2 Indirect verification 7 Verification Report/Calibration Certificate Annex A (Informative) Example of Indirect Verification of Measuring Devices |