Every so often DIY Life will post up a gallery featuring some odd bit of tool (old or new) that appears impenetrable. That is, we've no idea what it is. Or maybe we do know what it is, but we're wondering if you've ever seen such a thing.
To start things off, I traveled to my father-in-law's house for a look at some tools that were quite old indeed. As you can see from the picture, it's a bit rusty. But look through the gallery and see if you can figure out what this thing did-- back when you could see the metal under that rust.