The last photo of Carl Zeiss Jena Jenaval microscope 30 mm eyepiece tubus with diopter adjustment ring - Mikroskopteil

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Carl Zeiss Jena Jenaval microscope - 30 mm eyepiece tubus with diopter adjustment ring

(Carl Zeiss Jena Jenaval microscope - 30 mm eyepiece tubus with diopter adjustment ring)

Carl Zeiss Jena Jenaval microscope - 30 mm eyepiece tubus with diopter adjustment ring - different 11 view
Photo 11 – Carl Zeiss Jena Jenaval microscope - 30 mm eyepiece tubus with diopter adjustment ring