C-mount Reduction Lens Adapter for Microscope CCD CMOS USB Camera 0.3X 0.4X 0.5X

Microscope 0.5X C-Mount Adapter Camera Digital Relay Lens 23.2mm 30mm 30.5mm

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0.4X Microscope C Mount Adapter Reducing Relay Lens for USB Eyepiece CCD Camera

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0.5X C Mount Microscope Adapter 23.2mm Electronic Eyepiece Reduction Lens 05956