225 ILCS 470/53
Fractional parts of any unit of weight or measure shall mean like fractional parts of the value of such unit as prescribed or defined in Sections 3 and 4 of this Act, and all contracts concerning the sale of commodities and services shall be construed in accordance with this requirement.
(from Ch. 147, par. 153)
(Source: Laws 1963, p. 3433.)