DIRECTIVE 2011/17/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2011 repealing Council Directives 71/317/EEC, 71/347/EEC, 71/349/EEC, 74/148/EEC, 75/33/EEC, 76/765/EEC, 76/766/EEC and 86/217/EEC regarding metrology (Text with EEA relevance)