R.I. Gen. Laws § 47-3-2
Every person engaged in the trade of buying and selling, or of selling, or as a public weigher, who shall use or permit to be used for him or her, or have in his or her possession at his or her place of business, or upon any cart, wagon, or other vehicle which is used by him or her in carrying on his or her business, or upon his or her person while engaged in his or her business, any weight, measure, balance, or scale of whatever description, unless the weight, measure, balance, or scale shall have been duly sealed in conformity with the provisions of chapters 1 and 2 of this title, and every person who alters any weight, measure, balance, or scale after it has been duly sealed, so that it does not conform to the United States standard, or has in his or her possession any weight, measure, balance, or scale, which has been so altered, and every person who shall use or permit to be used for him or her, or have in his or her possession, as aforesaid, any weight, measure, balance, or scale which he or she has refused to allow to be examined or sealed by the sealer of weights and measures, or deputy sealer, according to the provisions of chapters 1 and 2 of this title, or who shall use or permit to be used for him or her or have in his or her possession any spring balance having a sliding or adjustable face plate or index, or any measure not made of the shape or dimensions required by law, shall be fined the sum of one hundred dollars ($100) for each offense, one-half (½) thereof to the use of the town or city in which the offense shall have been committed, and one-half (½) thereof to the complainant.
R.I. Gen. Laws § 47-3-2