I found this in my grandad's shed and wondering if anyone might know what it is? It looks like an old tractor part or something.

Looks like a tractor part to me too--maybe a paw going to a gear assembly.

I'd only be guessing...
A better picture of the artwork and then scan into Google images and look for a match.
It's fun finding old tools! Good luck!

Thanks lads. Yeah I'll take a better photo and see if Google has any answers. Ah sure guessing these things is half the fun anyway!

There are threads on the cross piece, looks like it tightened against something. Is that a name or number on the middle piece?