0.37X Microscope Camera Coupler C-Mount Adapter to Convert Eyetube Diameters 23.2mm to 30mm, 23.2mm to 30.5mm | Boli Optics Microscope Store
VariMag II Microscope Camera Adapter System - VariMag II DSLR Microscope Adapter System
Nikon SLR/DSLR Camera Adapter for Microscopes – AmScope
Amazon.com : T2-M4/3 Microscope Adapter with M42 Thread, Converter for 23.2mm T Mount Microscope Eyepiece to for Olympus M4/3 Mount Mirrorless Camera : Electronics
Microscope C-mount adapter 0.5x (clamp type)
All in one: LM Digital SLR Universal Adapter for phototube and the eyepiece tube (C-Mount, 23.2mm, 30mm 37mm, 38mm, 42mm)
23.2mm Microscope Reduce Lens C Mount Adapter Relay Camera Connect 0.37X 0.5X | eBay
Microscope Adapter to Abris-M Infrared Viewer and Contour Infrared Cameras
Nikon SLR/DSLR Camera Adapter for Microscopes – Microscope Central
Microscope Adapter | DSLR & MirrorLess
Amazon.com: Swift Microscope Lens Adapter,Smartphone Camera Adapter Mount, Microscope Accessory (Fits 28mm Eyepieces) : Electronics
Canon and Nikon SLR/DSLR Camera Adapter for Microscopes – AmScope