customary
It is a customary unit.
customary
Metric.
A "gran" is a German measurement, it is neither customary or metric. A "gram" is a metric unit.
The ounce is a unit of measurement used in customary systems, particularly in the United States and other countries that follow the imperial system. In the metric system, the equivalent unit for measuring weight is the gram.
Fahrenheit is a customary unit
The pound is NOT a metric unit.
It is a customary unit.
it is a customary unit
I'm guessing by customary, you mean imperial. if so inches are customary/imperial
It is the basic unit of time in both systems.
The customary unit would be miles (mi), and the metric unit would be kilometers (km).