An architectural cross-section illustrating the structural elements and vaulting of a Gothic cathedral.

A diagram illustrating the main components and operation of a nuclear power plant.

A diagram illustrating the components and construction stages of a reinforced concrete foundation.

An exploded diagram showing the primary components and gaskets of an inline-four internal combustion engine.

An annotated diagram showing the main components and internal structure of an electric motor.

A diagram illustrating the primary internal components of a four-stroke internal combustion engine.

A labeled diagram showing the main external and internal components of an airplane.

A diagram illustrating the primary components of a motorcycle engine's valve train mechanism.

An illustrated diagram showing the key components and assembly of a Wankel rotary engine.

A diagram illustrating the internal and external components of an incandescent light bulb.