I live in norway, and we use only mm,cm,m,km.... for measuring lenght / hight...
in weight, we use hg,kg,t
Anyway i work at Dunlop Hiflex.... we make hydraulic hoses and stuff...
EVERYTHING is measured in inches.... altho we are slowly converting to mm....
i belive we stopped using inches in year 1800 something.... weird that its still going...