The system of weights and measures in customary use in the United States and the metric system of weights and measures are jointly recognized and one or both of these systems shall be used for all commercial purposes in this Commonwealth. The definitions of basic units of weight and measure, the tables of weight and measure and weights and measures equivalents as published by the National Institute of Standards and Technology are recognized and shall govern weighing and measuring equipment and transactions within this Commonwealth.
The complete Pennsylvania Statutes are not yet available on the web. However, selected portions have been made available and can be accessed by CLICKING HERE. These statutes, though available instantaneously over the web, may not be the current law. Court decisions overturning them, later statutes amending them, and a host of other factors come into play when interpreting them. They are provided here as a resource. They should provide some information about the state of the law. However, a competent lawyer, who from other sources will research the law to insure what is current, should always be employed in matters of importance.