Microscope Objective Adapter by SimenZhor | Download free STL model | Printables.com
Canon Ring Adapter for Microscope
Microscope adapter for 2x macro photography with Sony A, E/FE, Canon EF/EF-S, M, RF, Nikon F, Z, Fuji X, Fuji G, M4/3, Pentax M42 cameras by thenickdude | Download free STL model