Lomo MMU-3 / MMY-3 metallurgical microscope EPI darkfield and brightfield with iris diaphragm slide - Video 1

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Lomo MMU-3 / MMY-3 metallurgical microscope EPI darkfield and brightfield with iris diaphragm slide

Video 1 – Lomo MMU-3 / MMY-3 metallurgical microscope EPI darkfield and brightfield with iris diaphragm slide