Section 248. Whoever violates any provision of sections two hundred and forty to two hundred and forty-seven, inclusive, if no other penalty is provided therein, or of a rule or regulation made under section two hundred and thirty-nine A, or fails to comply with any request for information or direction made under authority of sections two hundred and forty, two hundred and forty-one, and two hundred and forty-four to two hundred and forty-six, inclusive, or gives a false answer to any such request, shall be punished by a fine of not more than fifty dollars; and whoever is guilty of fraud or deceit as to the weighing, selling or delivering of coke, charcoal or coal, or the measuring, selling or delivering of fuel oil or range oil, or whoever, by himself, or by his servant, agent or employee, sells or delivers or attempts to sell or deliver coal or coke which is short in weight or coal which contains an unreasonable amount of shale, slate, rock or other foreign substance or which produces an excessive amount of non-combustible residue, including ash, shall be punished by a fine of not more than one thousand dollars or by imprisonment for not more than one year, or both. The director of standards and local sealers of weights and measures shall cause sections two hundred and forty-two to two hundred and forty-nine, inclusive, and rules and regulations made under section two hundred and thirty-nine A, to be enforced.