41d649c1_s_and_Measures_Act___Law_Delta__Definition
[0] 2. [Basic Unit] kilogram [Symbol] kg [Definition] 
the unit for the measurement of mass, being a mass equal to the mass of the international prototype of the kilogram established in the year 1889 by the First General Conference of Weights and Measures and deposited at the International Bureau of Weights and Measures
Law:Weights and Measures Act - Law Delta
Definition