Mr. Thomas Grenon, Director General and Mrs. Maguelonne Chambon, R&D Director of the Laboratoire National de Métrologie et d'Essais (LNE, France) visited NMIJ on April 27th and 28th 2017. After the discussions with Dr. Takashi Usuda, Director General of NMIJ and greeting to Dr. Yukinobu Miki, Senior Vice-President of AIST, they visited some research laboratories, standards laboratories and Metrology Training Center.