Non-commissioned officers.
first sergeants
The metric unit most often used to describe weight is the Kilogram.
A carrier window unit heater can often be repaired by replacing the internal fuses. More complex repairs may require the unit to be serviced by an experienced technician.
The metric unit used most often to measure liquids is the liter (L). It is a unit of capacity and is commonly used in everyday life and in the scientific community.
Joules
grains
Kelvin. http://en.wikipedia.org/wiki/Kelvin
A scale
Kelvin.
Grains
Kilogram.
PSI (Pressure per Square inch)