Miss. Code Ann. § 75-27-205

The weights and measures received from the United States under joint resolutions of Congress approved June 14, 1836, and July 27, 1866, and such new weights and measures as shall be received from the United States as standard weights and measures in addition thereto or in renewal thereof, and such weights and measures in conformity therewith as shall be supplied by the state shall, when the same shall have been certified by the national bureau of standards, be the state standards of weights and measures for the purpose of this article.