Instead of that little ball on the bottom and a collection of mechanical gizmos inside, optical mice have a tiny digital camera and a bright light-emitting diode.

But in marketing, where perception so often is reality, the spectacle of Coca-Cola being nagged by seemingly never-ending problems with a mechanical gizmo damaged the company's image.

He picked out circuit boards, electric motors, inexplicable mechanical gizmos that were parts of bigger machines, antique watches, the wind-up sort.

This computer-animated film's setting, a world made entirely for and by clanky mechanical gizmos, is rendered with impressive skill and imagination.

The setting, a world made entirely for and by clanky mechanical gizmos, is rendered with impressive skill and imagination, as are the characters, an assortment of dented heroes and sleek, silvery villains.