RMS to Lomo EPI (27mm, M27) Microscope Objective Adapter

RMS is standard thread for most microscope objectives. But some microscopes have other thread (LOMO Epi objectives have 27mm mount thread). So, if you want to use your RMS/DIN objectives on a microscope with M27 mount, you should use such adapter.

My adapters are used (I took them from different objectives), but they are high-quality brass items, so I believe they worth the price I'm asking for them.