Among his best-known inventions are a shoulder harness constructed principally out of three umbrellas, and a bicycle with a set of rotors that turned it into a pedal-powered helicopter.

She was constructed principally of yacal wood and burned coal for fuel.

The building is principally constructed of reinforced bush hammered concrete, which was also originally the interior wall surface.

The current ferry boat is constructed principally of wood, and was built in 1946.

The comparatively lightweight structure is principally constructed of steel, the skeleton balanced by precise weight ratios to ensure its stability.

Although it has Norman origins, the church as it stands today was constructed principally in the 12th century and was repaired and enlarged in 1862.

Constructed principally of anodized 6061 aluminum, they have a variable-focus beam.

Aberdeen in Scotland, which is constructed principally from local granite, is known as "The Granite City".

The funicular was constructed principally to serve several sanatoriums built at the same time to house tuberculosis patients.

Until this point, the cult would realize their services in treatros, structures constructed principally for the events, that were later torn down.