a ruler
The metric (SI) unit for weight is the newton, since weight is a force. When people talk about "weight", they sometimes actually mean "mass". The unit for mass is the kilogram.
Gram.
Tonnes
A kilogram (kg) is a measure of mass in the Metric system.
Kilogram
Mass is measured in grams.
It appears that you don't understand that the unit 'gram' IS a metric unit used to quantify the mass, or more conventially, the weight, of an object.
Grams. Matter is measured by mass and mass's main unit is grams.
Generally speaking milligrams.
The metric standard unit of mass is the kilogram (Kg).
The SI (metric) unit for mass is the kilogram.
The SI unit for mass in the metric system is the kilogram.
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 unit of mass is the Kilogram.
The metric standard unit of mass is the kilogram (Kg).
The mass of a beetle in metric units is 5 metric units no joke!
The kilogram is the Base Unit (not 'basic' unit) in the SI system (not 'metric system') for mass.