Division 3 Operating pressure and reference pressureF1 United Kingdom Repealed Original text. Later amendments are not shown. 3.1Operating pressure 3.2Reference pressure Annotations Textual amendments F1 Repealed by Directive 2004/22/EC of the European Parliament and of the Council of 31 March 2004 on measuring instruments (Text with EEA relevance). ← Division 2 Division 3 Division 3.1 →