The invention relates to a simple \u201cone click\u201d method for a User to calibrate their standard scanner or related device wherein a color target is inserted into the scanner and the User selects calibration initiation by clicking a single time on an icon as provided in the inventive method’s user interface. When it is sensed that the printing paper is not properly picked up, picking up the printing paper is retried considering a revolution cycle of the ITB. The testing tools generate testing data relating to one or more criteria for certifying the selected software applications. Each of the concentric tube modules is bottom-supported so as to allow for thermal expansion. Product features associated with each of the identified products may be retrieved and formatted into a comparison of product features. The gas diffusion portions and the spacer portions are integrally formed by bending a wire mesh member to have a rectangular corrugated plate shaped cross-section.