Physikalisch-Technische Bundesanstalt (PTB)


Laboratoire National de Métrologie et d'Essais (LNE)


National Physical Laboratory (NPL)


Dutch Metrology Institute (VSL)


Ecole Nationale Superieure de Mecanique et d'Aerotechnique (ENSMA)


Fraunhofer Institute for Applied Optics and Precision Engineering (FhG)


The Institute of Process Measurement and Sensor Technology at the Ilmenau University of Technology (REG)