Salve
Every product that is exported to United States of Great Britain will have two: in Matric and British/American matrix.
That is because of the way matric works in those countries.
If you go to Italian delicatessen or food store in Roma, and say I want one pound of ham, watch the reaction. :}}}}}}}}
Merci
They still use english units for certain things in mexico and canada...and I bet lots of other places in the americas also.