The basics of theoretical, legislative and practical (applied) metrology are considered : its theory and measurement tools, methodology for obtaining results and measurement errors, the main provisions of theoretical, legislative and practical metrology, standards, verification schemes, the structure of the state metrological service for ensuring the uniformity of measurements . The basics of standardization: Goals and objectives , Categories and types of standards , ISO International Standards , Basis of certification, Elements of Legal Metrology , and objectives, objects of certification systems , Expert methods of product quality assessment , Control technology, Identification and diagnosis of objects , models of systems and examples of implementation of technologies of applied metrology . Conforms to the GEF of the latest generation. For undergraduate and graduate students, graduate students, specialists in metrology and its applications .