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Dioptrienausgleich.Fernglas. Ring mit Skala zur Einstellung des Dioptrienausgleichs am linken Okular eines Fernglases Kooganbinoculars UTC Kooganbinoculars Stanislas PERRIN derivative work Bautsch talk Paire de jumelles Binoculars own work Stanislas PERRIN see below Binoculars Rodenstock
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