21^st edition of International Measurement Confederation took place this year. It was held in Prague, the capital city of Czech Republic, form 31^st August to 4^th September. Around 400 guests from across the world participated the congress, among them there were representatives of various branches, to name just a few: science, metrology and industry.

In course of this 5-day long congress, during numerous plenary, technical and poster sessions, about 500 lectures were delivered to the hungry for knowledge audience. The lectures covered various metrology aspects to a maximum extent. The opening plenary session provided the listeners with discourse on a new definition of Kelvin temperature unit. The key issue of the remaining sessions was redefinition of unit of mass. Apart from lectures, one could get engaged in “round table” debates titled SI System of Units - universal language for communication of IMEKO technical committees.