A mounting arrangement for mounting a vertical wall of a fuel tank protector to a vertical wall of a fuel tank includes a protector tab received in a fuel tank slot and a dog-house fastener received through a protector aperture and anchored in a fuel tank dog-house recess. Each leg includes an inner member having a pointed distal end and a proximal end attached to the base, and an outer member which freely slides relative to the inner member. The graphical user interface is provided to a display. A result of the segmenting step and a result of the computing step are displayed, in real-time. A selector is coupled to the first and second pattern generators and configured to output write data according to the first test pattern and the second test pattern. The filter element is first inserted into the case and the holder is thereafter fitted into the case so as to contact the seal portion of the filter element to the abutment surface of the case.