Whenever there shall exist a weight or measure or weighing or measuring device in or about any place in which or from which buying or selling is commonly carried on, there shall be a rebuttable presumption that such weight or measure or weighing or measuring device is regularly used for the business purposes of that place.
Presumptive evidence
10 M.R.S. § 2754, under WEIGHTS AND MEASURES LAW.
10 M.R.S. § 2754