Reference Standard 2 : Standard generally having the highest metrological quality available at a given location or in a given organisation, from which measurements made there are derived [VIM] [45]
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}