The last photo of Progress M-9 (Lomo M9) condenser holder (holder and screw) with microscope filter holder and height adjustment knob - Mikroskopteil

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Progress M-9 (Lomo M9) - condenser holder (holder and screw) with microscope filter holder and height adjustment knob

(Progress M-9 (Lomo M9) - microscope condenser support with screw and filter holder)

Progress M-9 (Lomo M9) - condenser holder (holder and screw) with microscope filter holder and height adjustment knob - different 8 view
Photo 8 – Progress M-9 (Lomo M9) - condenser holder (holder and screw) with microscope filter holder and height adjustment knob