The Konus #5653 3.2x SLR Photo Adapter is for their 5601 and 5605 Biorex microscopes.

This device has built-in 3.2x magnification, and converts the optical path to a standard T-mount fitting.

To use with your SLR camera, you must add a Konus T2 adapter ring or another manufacturer's T-mount specific to your camera brand.