Quote Originally Posted by paul ron View Post
But they do mate with eachother? I once had an old camera that had a weird PC that seemed too large for a regular PC cord. I found out a flash unit with the reflector n all cliped into this socket, it was a flash bulb unit. Perhaps your adaptors are to use a cable so the unit can be used remotely?.
No, they don't mate with each other. One side is PC female and the other side, although very similar to male PC, is definitely not. It apparently adapts a camera or shutter to accept a standard male PC cord. Again though... it's not Leica-M to PC nor ASA/Kodak bayonet to PC. It's something different. **Do you remember what old camera you had with the over-sized PC socket? I suppose that could be it.