contains the list of manufacturers of Lathes, Drills, Shapers, Milling Machines, Broaching Machines, Grinding Machines and other equipment that perform machining operations on the material. Machining operations in this group have been interpreted to mean those operations which are performed on the rough finished stock prior to such work as honing and polishing.

in addition to the machines listed in the four preceding groups, there are numerous other machines and equipment which perform operations that aid in the production line. Blueprinting or copying machines which speed up production and make it easier, are examples, as are die casting, drills, rivets, hoists, etc.

contains the list of manufacturers of Presses, Forming Machines, Stamping Machines, Forging Machines, Shearing Machines and Brakes. This group represents those machines that perform the first operations on material in the line of production.