I didn’t have a good picture of a yolk vise, but they work a bit like the picture above. You turn the handle which pushes the screw down which in turn pushes a cap onto a pipe. Image taken by Roger Lew via the CC BY 2.0 license.
I didn’t have a good picture of a yolk vise, but they work a bit like the picture above. You turn the handle which pushes the screw down which in turn pushes a cap onto a pipe.