| Simple machines | Inclined plane, Wheel and axle, Lever, Pulley, Wedge, Screw |
| Mechanical components | Gear, Rope, Spring, Wheel, Axle, Bearings, Belts, Seals, Roller chains, Link chains, Rack and pinion, Fastener, Key |
| Clock | Atomic clock, Chronometer, Pendulum clock, Quartz clock |
| Compressors and Pumps | Archimedes screw, Eductor-jet pump, Hydraulic ram, Pump, Tuyau, Vacuum pump |
| Heat engines | External combustion engines | Steam engine, Stirling engine |
| Internal combustion engines | Reciprocating engine, Wankel engine, Jet engine, Rocket, gas turbine |
| Linkages | Pantograph,Peaucellier-Lipkin |
| Turbine | Gas turbine, Jet engine, Steam turbine, Water turbine, Wind generator, Windmill (Air turbine) |
| Airfoil | Sail, Wing, Rudder, Flap, Propeller |
| Electronic machines | Computing machines | Calculator, Computer, Analog computer |
| Electronics | Transistor, Diode, Capacitor, Resistor, Inductor |
| Biological machines | Virus, Bacterium, Cell (biology), Plant and animal, DNA computers, Human being |
| Miscellaneous | Robot, Vending machine, Wind tunnel |
