You would measure that in grams, or milligrams.
In the SI - the current metric system - that would be the kilogram. In older metric systems, the gram has been used as the unit of mass.
The kilogram is the official unit of mass.
Carat IS a metric unit of mass
Kilogram
The gram.
The metric standard unit of mass is the kilogram (Kg).
The basic metric unit of mass is the gram (g).
The gram is a metric unit of mass.
The SI unit for mass in the metric system is the kilogram.
The basic unit of mass in the metric system is the gram.
A neutron is an electrically neutral subatomic particle. A Newton is the metric unit of force. A Kilogram is the metric unit of mass. We have no idea what a 'newtron' is.
The SI (metric) unit for mass is the kilogram.
The standard unit in the metric system for measuring mass is the kilogram (kg).
A metric unit of measurement for mass is called a gram.
An appropriate metric unit of mass for a pencil would be grams.
The SI unit of mass is the Kilogram.
The metric standard unit of mass is the kilogram (Kg).