A magnetic sweeper configured to collect magnetic metal debris, such as nails, screws, sheet metal fragments, staples, rivets and the like from a surface, and to permit easy removal of the collected debris from the sweeper is disclosed. In some cases, a priority indication associated with a data set is modified based upon one or more factors. Within the second inverter, one transistor is coupled to the second output of the previous dual path inverter, while another transistor is coupled to the previous dual path inverter’s first output. A sheet of material, threaded between the engagement surfaces is gripped by the surfaces.