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Continue to ChatRussian measuring microscope MPB-3M (50-25x) https://vintagelens.nl/shop/other-optical-instruments/microscope/russian-measuring-microscope-mpb-3m-50-25x/
Russian measuring microscope MPB-3M (50-25x) https://vintagelens.nl/shop/other-optical-instruments/microscope/russian-measuring-microscope-mpb-3m-50-25x/