Friday the Thirteenth Watizzit?

[Phineas Bluster]

Deleted

[454PB]

I recognize it, I have one. Mine is made of cast aluminum or a similar alloy. I can't recall the marketing name, but it's a vice system that is adaptable to multiple configurations. The part you have is one of several. It's designed to clamp onto a bench top with built-in C clamp type connectors. I'll check when I'm in my shop again, but it's called something like a Versa Vice.

[shooterg]

Saw something similar a bit back. I was told it was a fixture to hold ice skate blades for sharpening ! Danged if I know !

[brass410]

sight vise for straightening your line of sight after too many adult beverages

[mozeppa]

i think it might be a luthiers clamp.

it holds another part for working on violins , mandolins and the like.