Mueller Caulking Tools. The makers of edge-tools long ago learned the lesson of forming them in graceful shapes highly polished and set off with attractive handles. Makers of tools for use on iron, especially in the gas and water trade have not advanced so rapidly, because the character of the work did not seem to call for it. The H. Mueller Manufacturing company, of Decatur, Ill., and New York city, has made a radical departure in this particular and has put on the market a set of ten caulking tools that are surprisingly good examples of painstaking manufacture. These tools are hand-forged from the Iest octagonal tool steel. Each Doint is ground to a certain gauge and tempered to the right degree of hardness. The tools are given a fine polish, and in workmanship, finish and appearance they prove unusually attractive.