class of measuring instruments or measuring systems that meet stated metrological requirements that are intended to keep measurement errors or instrumental measurement uncertainties within specified limits under specified operating conditions

Notes click to expand contents

Contents

Contents

1 Quantities and units click to expand contents

2 Measurement click to expand contents

3 Devices for measurement click to expand contents

4 Properties of measuring devices click to expand contents

5 Measurement standards (Etalons) click to expand contents

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