National Metrology Institutes

Istituto Nazionale di Ricerca Metrologica, INRIM, Italy	Central Office of Measures, GUM, Poland	Observatoire de Paris, OBSPARIS, France	National Metrology Institute, VSL, The Netherland	Eidgenössisches Institut für Metrologie, METAS, Switzerland

Research Institutes and Universities

Aarhus Universitet, AU, Denmark	Consiglio Nazionale delle Ricerche, CNR, Italy	Centre National de la Recherche Scientifique, CNRS, France	Heinrich-Heine-Universität Düsseldorf, HHUD, Germany	Uniwersytet Mikolaja Kopernika w Toruniu, UMK, Poland

Vrije Universiteit Amsterdam, VU, The Netherlands	University of Évry Val d'Essonne, UEVE, France	Eidgenössische Technische Hochschule Zürich, ETHZ, Switzerland	Imperial College of Science, Technology and Medicine, IC, United Kingdom	Universität Basel, UNIBAS, Switzerland