National Measurement System (NMS) is a primary importance for any industrialized countries since it is a prerequisite for science and technology development and implementation. NMS plays an integral role in assuring the accuracy, consistency, comparability and reliability of measurement results by ensuring that they are traceable to the national measurement standards, and, hence, are traceable to the definitions of the SI units.

Traceable to national measurement standards is also used as a key measure by the international standards, such as ISO 9001 and ISO/IEC 17025, to ensure technical reliability of the quality management system. Hence, NMS is a scientific, economic and social necessity.