They shall, once at least in every period of five years, be verified, and if necessary, adjusted or renewed, at the Mint in such manner and by such officer as Government may direct.

Secondary standards For the purpose of verifying the working standards and weights and measures in use in any area, such standard weights and measures as Government may direct shall be prepared [missing text] by the Mint Master [or by such other person as may be approved by Government]. They shall be made of such material, weight, length, form and specifications and in such manner as may be prescribed and shall be stamped with the stamp of the Mint [or in such other manner as Government may approve].