Mo. Rev. Stat. § 413.035
413.035 Standards and systems of weights and measures authorized for use.
413.035. Standards and systems of weights and measures authorized for use. — The system of weights and measures in customary use in the United States and the metric system of weights and measures are jointly recognized.
(L. 1983 H.B. 729, A.L. 1994 S.B. 729)