Partlow 04634742P PCB Circuit Board Module AJ-300 CHART RECORDER. Title: Partlow 04634742P PCB Circuit Board Module AJ-300 CHART RECORDER. Quality Products at Lowest Prices. VB Industrial Supply takes pride in doing whatever possible to make you have a great experience. If you ever have any questions or are ever unsatisfied, for any reason please let us know. We’re down to earth, easy to work with people. VB Industrial Supply offers a huge selection of tools for every trade including new and used electrical, mechanical, hydraulic and pneumatic industrial components & supplies. VB Industrial Supply takes great pride to honestly and accurately describe each item listed. Our listings include many detailed photos. Items are not returnable for condition issues commented on or shown in the pictures.