@ladrillero I have traveled to 157 countries 48 states in the USA all but two of the provinces of Canada and yet I live in the USA and so I use, and think primarily, in the English system. I lived in France for four years and Germany for three, worked in Turkey for 10 in the old Yugoslavia for 13 years and yet I still must operate day to day in a different system than the rest of the world and I prefer to use that system because that is where I live.