The last photo of Carl Zeiss Jena Jenaval / Jenalumar microscope field diaphragm lens on metal plate - Mikroskopteil

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Carl Zeiss Jena Jenaval / Jenalumar microscope field diaphragm lens on metal plate

(Carl Zeiss Jena Jenaval / Jenalumar microscope field diaphragm lens on metal plate)

Carl Zeiss Jena Jenaval / Jenalumar microscope field diaphragm lens on metal plate - different 13 view
Photo 13 – Carl Zeiss Jena Jenaval / Jenalumar microscope field diaphragm lens on metal plate