Section 2(c) in The Standard of Weights and Measures (Approval of Models) Rules, 1987
(c)"Model "means the final physical representation of a weight or measure in which all the components imparting to it the necessary metrological and technical characteristics and qualities [as defined in the Act and the Rules made thereunder] [ Inserted by G.S.R. 492(E), dated 24-5-2000 (w.e.f.8-8-2000).] are suitably assembled so that, subject to prescribed tolerances, every weight or measure produced in accordance with such model may be similar as regards dimensions, constructions, material performance and other metrological and technical characteristics;
