But they have completely different mechanical designs if you were to open them up.

The mechanical design is a case of high technology meets old school engineering.

The mechanical design began in 2001 as an undergraduate thesis project.

As a young boy, he spent much time riding a bicycle around the city, and was fascinated by its mechanical design.

Many different roller shapes and mechanical designs have been used.

His research greatly influenced structural and mechanical design across the world.

She would set up a school for the study of mathematics, electricity, electronics, and mechanical design.

Later the mechanical design was dropped on the grounds of cost, although the sideways plan remained.

Combining his interest in artwork and mechanical design, he decided to become an architect.

There were two visibly different styles of mechanical design for the elements.