In 1793, Thomas Jefferson requested equipment from France that could be used to evaluate the metric system within the United States, Joseph Dombey returned from France with a standard kilogram. Before reaching the United States, Dombey’s ship was blown off course by a storm and captured by pirates, and he died in captivity on Montserrat.
Military is the big one. It’s where i learned metric. Helped me a ton went i moved overseas.