The miniature/salesman samples were made by the manufactures of the big ones, Williams mostly. They made several different ones, Agrippa & Vulcan that I know of. Trimont MFG Co made one, Trimo Bull Dog and so did Greene Tweed & Co, New Champion Chain Pipe Wrench. I have 8 in my collection, they vary in size from about 6 inches long to about 7 inches long, handle length not including the chain, several are duplicates. One of mine has the leatherette case with the flat link chain, round link non-marring chain and the cheater pipe. This is the only one that I have ever seen with both chains. I'll try and get a group picture up in the next few days. I also have one of the Williams salesman sample bench top pipe vises.