The Three Rings gadget

"So how does it work?", Mrs. Dunham asked, suspiciously examining the small pile of leather and metal her husband had dumped on the table in front of her. Parts of it seemed familiar enough: the wrist cuffs, and that larger one looked like it could be a collar of some sort. But then again there was this other triangular piece, and those three large rings... Mr. Dunham chuckled. "Why don't I show you?"

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