Example image of eyePlorer eyePlorer map for 'Crane (machine)': Chain Sheave (mechanical) Winder Wire rope Mechanical advantage Simple machine Construction Heavy equipment (construction) Transport Ancient Greece Treadwheel High Middle Ages Cast iron Industrial Revolution Steel Watermill Windmill Steam crane Steam engine Electric motor Hydraulics Internal combustion engine Lewis (lifting appliance) Inclined plane Pulley Winch Archaic Greece Parthenon Aristotle Roman Empire Hero of Alexandria Vitruvius Quintus Haterius Treadwheel crane Rope Egyptian pyramids Capstan (nautical) Ammianus Marcellinus Circus Maximus List of obelisks in Rome Western Roman Empire Antwerp Bruges Hamburg Utrecht (city) Gothic architecture Brick hod Ladder Wheelbarrow Crank (mechanism)