| 摘要 |
The present invention relates to a map reading device or apparatus adapted to receive a film having a series of frames of map indicia thereon, each map indicia frame representing a certain geographical area such as a State, a portion of a State, a City, a portion of a City, or County, etc. Light is projected through any one of a series of certain desired map indicia frames and a map image is thusly formed. The formed map image is directed through a magnifying lens that magnifies or enlarges the map image and projects the same on a forwardly spaced screen within the map reading apparatus where the map can easily and conveniently be read and studied even while operating a motor vehicle.
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