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Gafa tele-lupa, caracterizada por que comprende un puente con arco susceptible de descansar sobre la nariz provisto de varillas, en el cual puente va una varilla central soporte en la que articula otra varilla, que queda giratoria en plano perpendicular al del puente y en la cual mediante dispositivo de tornillo y tuerca, se fija, amovible y reemplazable otra varilla en cuyo extremo articula sobre eje perpendicular a dicha varilla, el soporte portalentes, las cuales van montadas en dicho soporte.
Perfeccionamientos en las deslizaderas de husillo telescopico para tragaluces, tales como ventanas, registros de ventilacion, cupulas de luz y similares