To provide a steering device from which good operation feeling can be obtained in tilt and telescoping adjustments, and whose configuration is very simple. Rapid prototype integrated matrix array inspection apparatus, systems, and methods provide fast and efficient methods of constructing custom inspection devices. The design is associated with the person, place or thing such that a third party, when viewing the design, will associate the design with the person, place or thing being promoted. In forming the second waveguide region, light is confined therein by providing effective difference in refractive index in the active layer. The subject spray-cooling system can incorporate a spray nozzle and a heat transfer plate. The method includes receiving multi-carrier modulated signals over a period of time, estimating an SNR for each received sub-carrier, constructing a sequence of the SNRs, and estimating link PER based upon knowledge of encoding andor interleaving used during transmission, and the sequence of SNRs.