What is it?

[Crunchie]

I don't know which part of the forum to use, so I'll post here.
I am currently clearing out my Father-in Law's 5 sheds and have come across a tool that no-one around here can identify. It looks like it is a clamping device but it wouldn't clamp very tightly at all. It has a light "leaf" spring to keep the serrated jaws apart and the locking device looks just like one chain link. The tool is only 120mm (4 3/4") long.

463058463059463060

[rwbuild]

Its a lifting grab for either ply or sheet steel, the ring is hit down to wedge onto the material, most likely for ply

[Crunchie]

Thank you. It had us stumped.

[rwbuild]

My answer was a wild educated guess but I suspect I'm not too far off the mark, might even have been used for lifting bagged goods as well

[NCArcher]

I think it's for tying down the corner of a tarpaulin. Also a guess.
Here's a more modern one

463085

[rwbuild]

I think your closer to the mark than I was

[Simplicity]

It’s definitely a pulling clamp of some sort.
For what, I have know idea.

Cheers Matt.