Capacity isn't a unit at all. It's a characteristic, or a property of an item, which can be measured in whatever suitable unit. Capacity of batteries is measured in amp hours. Capacity of a gas tank can come in either liters or gallons.
It is a customary unit.
The customary unit of capacity for a bathtub is gallons.
Capacity can be measured using both the metric system and customary units. In the metric system, capacity is typically measured in liters or milliliters, while in the customary system, it is measured in ounces, cups, pints, quarts, and gallons.
You would use the metric unit "liters" to measure the capacity of a hot water tank.
Millimeter is one thousandth of a meter. It is the metric unit of length. The SI unit is meter.
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.
Fahrenheit is a customary unit
The pound is NOT a metric unit.
customary
It is a customary unit.
The customary unit of capacity for a bathtub is gallons.
it is a customary unit
I'm guessing by customary, you mean imperial. if so inches are customary/imperial
Capacity can be measured using both the metric system and customary units. In the metric system, capacity is typically measured in liters or milliliters, while in the customary system, it is measured in ounces, cups, pints, quarts, and gallons.