A hand-held imager which is capable of reading both linear and two dimensional symbologies, which can perform focusing and illuminating steps quickly and accurately so as to eliminate variation in the position of the imager relative to the code becoming a negative factor, in which can operate in environment where the imager is anywhere from 1. In one representative embodiment, the welder comprises a fuel tank adapted to contain a fuel under pressure and a heating element in fluid communication with the fuel tank. The addressing module comprises an addressing module identifier that associates the addressing module with a particular fiber node. A peak envelope calculating portion graphs the brightness against positions on the observation line and draws envelopes of line graphs each of which links local maximums or local minimums of the brightness. The compounds of Formula I are pharmaceutically active compounds which are selective inhibitors of Cyclooxygenase II. The hollow support member has an external surface, a barrier layer arranged on at least a portion of the external surface of the hollow support member, a catalyst layer arranged on the barrier layer and a sealing layer arranged on the catalyst layer and the external surface of the hollow support member other than the at least a portion of the external surface of the hollow support member.