225 ILCS 470/33

It is unlawful for any person to manufacture, offer or expose for sale, or to sell or give away for use in trade or commerce, or to use in trade or commerce, any weight or measure or weighing or measuring device of a type not approved in accordance with the provisions of this Act, except that if the type of a weight or measure or weighing or measuring device is intended for shipment outside the State of Illinois, no approval of type is necessary.