A cup
The pound is the basic unit.
The basic unit of length in the metric system is the meter. Grams are used to measure weight and liter is used to measure liquid capacity.
The basic metric unit of measure for measuring the capacity of a pitcher is liters (L).
Newton is a measure of force.Expressed in basic units is kg.m/s2.
Ancient Greek is the basic unit used to measure liquid. Ancient Greek can change location and epoch.
For length, the basic measure is the meter
Liters
liters
THe SI system or metric system is based on meter (m) as the basic unit of measure.
the Mayflower Compact
England has converted to the SI system. There are several basic units: metre m length kilogram kg mass second s time ampere A electric current kelvin K thermodynamic temperature mole mol amount of substance candela CD luminous intensity If you are talking about the U.S system, the basic units are as above, and they are converted to feet, pounds, deg F, etc as needed.