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.
grains
Joules
Kelvin. http://en.wikipedia.org/wiki/Kelvin
Kelvin.
A scale
Grains
Kilogram.
PSI (Pressure per Square inch)