Example image of eyePlorer eyePlorer map for 'Machine tool': Machining Human Animal Water wheel Industrial Revolution Steam engine Electricity Flywheel Numerical control World War II Punched card Punched tape Computer Drill Drill bit Magazine Milling machine Self-replication Electrical discharge machining Rapid prototyping Bridgeport, Connecticut Cincinnati Hartford, Connecticut Philadelphia Providence, Rhode Island Rockford, Illinois Springfield, Vermont Windsor, Vermont Multimachine Alfred Herbert Alfred Herbert (company) American system of manufacturing Apex auctions Bridgeport Machines, Inc. Brother Industries Charles Hotchkiss Norton Chip pan (machine shop) David J. Gingery Direct Numerical Control Edwin R. Fellows Flask (casting) Four-slide Frank L. Stulen Gear shaper Gleason Corporation Grinding machine Haas Automation Hardinge, Inc. Henry Maudslay Hone