series of tests and visual examinations carried out before the equipment/weight is put into service to determine whether a weight or weight set has been manufactured to replicate a given type and conforms to that type and to regulations, and that its metrological characteristics lie within the limits required for initial verification of copies of that type. If the weights or weight set pass all the tests and examinations, it is given legal character by its acceptance as evidenced by stamping and/or the issuing of a certificate of verification (Adapted from OIML D 20 Initial and subsequent verification of measuring instruments and processes (1988))