meters
If you want to be precise in your measurements, you would probably use centimeters. 1 centimeter equals approximately .3937 inches.
metric unit
Weighing balance is used to measure mass. The metric unit is kilograms.
miles?
Millimeters
You would use kilometers (km).
A door is about 2 meters, but most likely you'd measure in centimeters.
I would use the metric unit is inches
mg
metric unit
Weighing balance is used to measure mass. The metric unit is kilograms.
The second.
A microgram.
The Liter isthe Metric liquid unit of measure.
meters
mililiter
Litres.
Kilogram