Metrology is divided into several sections:
The activity related to research in the following fields of metrology (measurement units, measurement standards, measurement methods, measurement tools) and work on their development.
The activity related to guarantee of validity of results of the measurement tools used in industrial operations including production, section and control.
The activity related to mandatory legal requirements of metrology, metrology units, metrology tools and metrology methods to supervise execution and practice by the appropriate government authority.
The last activity of metrology, legal metrology, is the key tool for control and protection of markets, as this activity is usually practiced by government authorities that impose on metrology tools applied in the commercial transactions or those that may affect the safety and health of community members.
These requirements aim at reaching the reliability of the results of the measurement tools subject to such requirements, provided that (weights and scales used in commercial transactions, fuel packing pumps, medical blood pressure measurement systems, medical thermometers, … etc.)