Addition!
The Imperial system
There is basically ONE metric system currently used worldwide. It is called the SI. All countries that use "the metric system" are really using the SI. Other metric systems were used in the past, but they are not commonly used in any country.
The cgs system. That is centimeter-gram-second measurement system.
The measurement system, which was used in Europe before the metric system was the Roman and Anglo-Saxon measurement systems. Examples are acre, furlong and yard.
The measurement system, which was used in Europe before the metric system was the Roman and Anglo-Saxon measurement systems. Examples are acre, furlong and yard.
The Imperial, or British system
The measurement system, which was used in Europe before the metric system was the Roman and Anglo-Saxon measurement systems. Examples are acre, furlong and yard.
The same Imperial System used by the UK, since South Africa used to be a British colony.
The metric system is used for measuring anything and everything.
The metric system is used for temperatures from Celsius.
Most of the world uses the metric system for measurement. The main units used outside of the U.S.A. is the metric system or SI (System Internationale).
The metric system is used everywhere.