42mm To C mount 0.35X 0.4X 0.5X 0.63X 0.8X Focusable Lock Microscope Adapter Trinocular Reduce Lens CCD for Olympus Microscope

42mm To C mount 0.35X 0.4X 0.5X 0.63X 0.8X Focusable Lock Microscope Adapter Trinocular Reduce Lens CCD for Olympus Microscope

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