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Binoculares perfeccionados caracterizados por comprender una montura similar a la de las Gafas convencionales provistas de dos patillas de sujección, en cuya parte frontal se han montado ambos elementos ópticos de aumento, con dispositivo de enfoque por tubos concéntricos deslizantes con una guía helicoidal y comportando cada uno la lente adecuada en cada caso.