The bump stop device, particularly for a motor vehicle, comprises a bearing 6 forming an axial stop, a bottom support cover 5 of the bearing and a bottom retainer 7 for a spring comprising at least one stiffening strut. Also disclosed are methods for labelling target biological materials employing the quinacridone dyes and use of the labelled materials in biological assays. Various techniques and procedures can be used to determine the absolute magnitudes of the angular magnitudes by which the marine propulsion devices are rotated. Each of the sun vision visor and the night vision visor are contained within each of the respective first cavity and second cavity when in a retracted position. The text is stored in memory in a vector graphics format, preferably without carrying out character recognition. Techniques for determining a type of a cable coupled to a defibrillator are also described.