Is the underside of that rebar tool curved across its width? If so, it's likely for pounding the oakum and then the lead into cast iron DWV ("sewer") lines: mate the end of one pipe with the bell end of the next, support firmly, pound oakum into the gap between the bell and and the pipe inside it, then pour melted lead in, and pound it down to set it firmly. I suppose the rebar-like ridges were to help you hold onto a tool that could easily get pretty dirty.
I've seen the wrench described as a "setscrew" wrench, for use on those square-headed setscrews, but it could also be a toolpost wrench. Either way, look for square nuts/bolts to use it on.
The hook spanner's interesting. I wonder what the prying end was for?
