As «scientific» metrology we characterize what includes the total of knowledge that allows to be attributed in the result of a measurement only the importance, that is expected by the given measurement conditions.
The study of characteristics of realised measurements is highly important for the metrology. Errors that are presented at the duration of measurements are noise, interjections, the interaction between meter and scale size, divergence, the precision of measurement etc.
For the minimization of probabilities of errors' appearance, the science of metrology is particularly strict for the selection of measurement instrument, the methods of measurement, the reduction of environment effection and selection of units with the higher possible precision, included in systems of international acceptance.
For the optimization of measurement processes and the reception of as long as possible more precise results of measurement, the metrology deals with the analysis of causal errors aiming at finding methods so as to avoid them, as well as the systematic errors, whose study allows the reception of information of statistical nature, which can be used for the determination of data of measurement in order that the errors be as smaller as possible. metrology is extremely important for the society, since in industry, in commercial organizations and in institutions, the quality of products and the guarantees they offer possess sovereign place. These can be ensured via precise, secure and reliable measurements and controls.