Don't know if this is automotive related or not but I bet somebody knows. The "C" part is about 2.75 wide.
Also looks like someone made it into that implement...maybe it's been welded and ground at the funky end?
It is used to entertain hot rod guys who wish it was warm enough to cruise around and go to swap meets but instead are getting a hot rod fix on the Hamb. I think it is a clamp to put a patch on a tire, its been altered. Vulcanizing clamp? my best guess