This was Millers Falls finest chain drill, having the “master” chuck for hold round, as well as square taper bit. It features hand as well as automatic advance. The tool is in new, shiny condition, with all of its original finishes. The chuck is marked with 1907, 1909, and 1910 patent dates. It was made in Millers Falls, Mass, dating it to the 1920s. You’ll not find a nicer chain drill that is about 100 years old.. Fine.