Abstract: An apparatus and method to individually weigh continuously fed mail pieces wherein each mail piece is configured in a vertical orientation and fed through the weighing system in seriatim. The apparatus contains a scale transport assembly for transporting mail pieces seriatim, a mail piece channel pathway assembly for maintaining the vertical orientation of individual mail pieces, a load cell assembly for measuring the mail piece weight, an x-y table assembly for allowing position adjustments of the weighing system, data collection circuitry, and a support module. The apparatus can be used in conjunction with bulk mail processing systems or it can be used independently.