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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES1973191817UpriorityCriticalpatent/ES191817Y/en
Publication of ES191817UpublicationCriticalpatent/ES191817U/en
Application grantedgrantedCritical
Publication of ES191817YpublicationCriticalpatent/ES191817Y/en
Improved optical instrument, characterized in that it comprises, inside a housing with an appropriate external shape, the arrangement of an endless band of film in slides that run in front of a correspondingly shaped window, driven by a wheel sent from the outside acting on it by friction or by pivots on the perforation of the film being reflected the dispositive in a mirror located at an angle seen by a viewfinder in the adjacent plane and with the interposition of a magnifying lens. (Machine-translation by Google Translate, not legally binding)