Metrology is very important for the society,the industry, the commercial organisms and the institutions.The quality of products can be ensured via precise, sure and reliable measurements and controls.
This is also the aim of «legal metrology» whose object is the establishment, the essential laws and regulations on scientific bases, in order to ensure the validity of measurements regarding the commercial deals so as to be international commercial reliance.
The units of measurement, the conditions of measurement, as well as the tolerances that are in effect in every case according to each law.
The cost of measurement is proportional to the desirable precision. It’s result is the appearance of a «pyramid», in top of which international organisms which provide the biggest possible precision in measurements, followed by national institutes are found. Lower on issues of quality measurement are found the various metrological laboratories, while the base of the «pyramid» constitute the metrical units that are used in the industries.
Specifically in industry the metrication allows the application of certain models aiming at the regrouping and the collaboration of mechanic parts, the control of quality of used raw materials, the inspection of production processes and mainly the guarantee of the quality of final products.
Industries direct gain from the above processes is the reduction of cost via the reduction of produced defective products, accidents as well as interruptions of operation, because of the existence stable and qualitative, productive processes.
The indirect profit is the disposal in the purchase of products of ensured quality that creates relations of confidence with the customers.
The extension of commercial transactions of enterprises from local to the international henceforth market, because of the globalisation, has made still more imperative the need of the existence of single systems of units as well as the existence of international models, which will ensure the quality of production processes and it’s products, worldwide.
According to all of these, we may conclude that obviously there is a need of existence and growth of science of metrology, not only in a local but also in an international level.