Section 12(1) in The Standards Of Weights And Measures Act, 1976
(1)The Central Government may, by rules made in this behalf, specify, in relation to the base units of weight or measure, such supplementary, derived, or other units or standard symbols or definitions as the General Conference on Weights and Measures or the International Organisation of Legal Metrology may recommend.Explanation. Derived unit means a unit which is derived from the base, or supplementary, units, or both.
