Found this this the other day. I've seen them before but this one called my name.

I love those things.  Bonney called them the "Always Ready Wrench."  Here's mine: http://toolarchives.com/node/438

I have a few. Here are some in a display-

Nice one!  I only have one in my accumulation and it is a bit unique in that there are 3 dies in the center of the handle. I think someone may have chrome plated this one after the fact as I don't believe chrome was in use much before 1932.