Abstract: A pair of viewers for mounting in an automobile for the driver to observe driving signals that are located overhead, or in elevated position, where it is difficult for the driver to see, in his normal driving position. The viewers are in the form of plano-concave lenses having predetermined optical characteristics, having a diopter of substantially -4, and a prism angle of substantially 16.degree.. The viewers are identical as to optical characteristics, but include mechanical means that are oppositely arranged and symmetrical for mounting them in transversely spaced positions relative to the driver. Each lens covers a certain scope or range of view, and because of their spacing apart, the ranges are different, and the driver can, by almost instant glances at one and then the other, take in a wide range of view.