New viewing device for the observation of maps and maps maps (Machine-translation by Google Translate, not legally binding)

摘要

New viewing device for the observation of plans, charts and geographical maps, essentially characterized by being composed of a chassis or elongated box, made of metal, plastic material or other suitable material and also suitable for lodging inside it, in the Ordinary arrangement in which the rolls of virgin film are housed in the well-known photographic machines, the roll of film formed by the juxtaposition of the micro-photographic reproductions of the planes, letters or geographical maps, in such a way that the ends of that roll can be attached to the two vertical axes of rotation placed on the inner ends of the box and that these axes can be driven from right to left and from left to right from the outside, by means of shape controls, and known nature, so that the film be displaced in the corresponding turn and that the microphotogram that you want to observe, of those that compose it, remains on each occasion placed n the position of being observed. (Machine-translation by Google Translate, not legally binding)