I do not know!
No, even the US uses the metric system (although we retain traditional units for many purposes). Even the traditional units used in the US use the metric system as their calibration standards (eliminating the older independant traditional standards). I have an 1877 Arithmetic schoolbook which has a section on using the metric system that was used in US grade schools at that time. (this copy was used by my grandmother and her sister when they were in grade school)
In all the continents are using some countries are using the metric system more in Asia and Europe most of the countries are using the metric system.
By using measuring tools with metric measurements on them.
I guess it really depends on weather your using propane or charcoal.
The English system is a measurement system; in a sense it is a metric system but it is not the metric system, so I would avoid using that word to describe it.
It means multiplying with constants from a non metric system (such as length using yards, feet, inches) to a metric system (using meters)
It is a measurement of volume using units from the metric system.
Metric measurement is measurement made using units as defined under the metric system.
no
Metres
kilometer
There are no problems when using the metric system. The metric system is a lot simpler than any archaic country-specific system. If you are usinĝ a country-specific system, this is a lot more complicated, as you have to convert so your customers can understand your products.