Abstract: A miniature map viewer employing a magnifying lens and an aligning reticle disposed within the field of view of the lens is disclosed. The reticle is used for aligning points on the map and real geographic features and may be augmented by and used in conjunction with an angular orientation degree scale indicator, a compass, and/or an object sighting device, which are also disclosed.

Abstract: A miniature image viewer having a variable field of view, variable magnification lens assembly is disclosed. The assembly is scannable over the surface of the image to view successive portions which have information not normally discernable to the human eye. The assembly may comprise a zoom lens system or two or more independent lenses, at least one of which is moveable in and out of the field of view of the other.