(1) The Chief Metrologist shall maintain, or cause to be maintained, such standards of measurement as are necessary to provide means by which measurements of physical quantities for which there are Australian legal units of measurement may be made in terms of those units.
(2) The Chief Metrologist shall maintain, or cause to be
maintained, such standards of measurement (not being Australian primary
standards of measurement) as the Chief Metrologist considers desirable to
maintain as Australian secondary standards of measurement in order to provide
additional means by which measurements of physical quantities for which there
are Australian legal units of measurement may be made in terms of those units.