It's a tool specialized to a certain trade.
And since I happen to have one....... all you need to do is sift through 3,800 some posts to know what I used to do. That will localize your searches
Or take a good guess based on..... nope, not going to say it yet.
Close enough!
It's used to help pull ductwork together. You hook the wheels in the "drivecleat" on each joint and use leverage to draw them together.
Just like the tile nipper could have been used...
I'll post something really easy around 5:30. Really.
More or less a pass the torch photo, so be ready if you have a photo you've been wanting to stump us with.