The need of research in Metrology segment is the need of today’s consumer. The Legal Metrology subject is based on metric system with reference to Metre Convention held in Paris on 20 May 1875. Representatives of 17 countries were present for Metre Convention including United State of America. The treaty to form an International Law were signed in Paris on 1875 by the 17 representative nations. The legal metrology organization is based on the SI units. The definition of Si units are decided by the International Organization of legal metrology. The metrology is use for the protection of the consumers through the weights and measure department of various state. The enforcement rules of every state works specially for the consumers protection and use uniform standards throughout the country. The SI units which are verified and defined the General Conference of Weights and Measures (CGPM). In the 26th CGPM meeting held on 14th November 2018 the definition of kilogram, ampere, kelvin and mole were redefined in terms of permanently new fixed values of the plank constant, elementary cgarge, bolizmans constant and Avogadro constant respectively.
The department of Legal Metrology in the state is charged with the duty of the ensuring that the accurate weighment and measurement of goods in commercial transactions. The legal provisions are contained in enactment by parliament and state legislature supplemented by detailed rules. The state Legal Metrology Organization formerly known as Weights and Measures, responsible for accurate weighment and measurement of goods in commercial transaction are now required to ensure additional responsibilities of ensuring accuracy in other fields namely industrial production and protection human beings, animal and plants. Hence the development and research is required in Legal Metrology.