A holder device attaching to a vehicle with a releasable attachment strip flexibly attached to a main body and having receptacles for holding a fishing rod. In order to obtain a linear ratio between the differential pressure and the volumetric flow of a gas, a rectangular section elbow and a rectangular flexible plate located inside the elbow are used. A display assembly controller may be used to render a light field with depth into a multi-planar plenoptic display assembly by assigning decomposed portions of the light field to the display assembly for display or presentation by differing ones of the emitting elements and by operating a modulating device to provide a parallax barrier. The relative axial position between may be set such that the piston rod and the proximal face of the piston abut each other. When the distortion correction table data held in the memory are not registered, the distortion correction table data held in the memory are selected, and are registered in the table units. Alternatively or additionally, the image includes a cognitively functional graphic.