M42 to 23.2mm 30mm Thread Adapter Microscope Eyepiece SLR Camera Extension Tube

23.2mm Mounting Universal Microscope Stand Mount Bracket Adapter for Cellphone

Microscope Eyepiece Camera Adapter 30.5mm OD x 23.2mm ID

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

C-Mount to 23.2mm Adapter Nikon/Canon SLR Camera f Trinocular Stereo Microscope

C-mount to 30 mm 30.5 mm Adapter for Stereo Microscope Connecting to USB Camera

Microscope Adapter 1X C-Mount 23.2mm Adapter/For CCD Camera Eyepiece LensAdapter

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