Section 86. All persons appointed under section eighty-five shall keep accurate records, in the form prescribed by the director of standards, of all weighings, measurements or surveys made by them, which shall at all reasonable times be open to inspection by said director and his inspectors and by the local sealer of weights and measures. If any person so appointed shall wilfully misrepresent the weight, quantity or measurements of any goods weighed, measured or surveyed by him, he shall be punished by a fine of not more than one hundred dollars.