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ok, here it comes!
Not a brilliant foto but the cat occupies the light box so I can't redo.

http://www.olivia-seife.de/images/loomhardw.jpg

The thread is on the inside plate.
The one with the...

They still exist, Tslil!
The screws are set differently (you turn the handle to adjust tension)
Want to see details?

Tslil this is just beautiful!
You're such a busy man.

Like the wrench too of course :)