no-one
1970
1972
A gallon is certainly not metric. It is imperial.
Imperial.
Metric tons can't be converted to imperial gallons. Metric tons measure mass, while imperial gallons measure volume.
There is no such thing as a metric gallon. The metric measurement is litres. There are 4.54609188 litres to an imperial gallon.
A tonne is a metric measurement.
You need to change your Country to one that uses Imperial (USA) in the Wii Setup Menu.
imperial - Elvinusa
The opposing systems are imperial and metric, not customary. But, meters are metric.
I'm guessing by customary, you mean imperial. if so inches are customary/imperial
It is neither.