SpaceNavigator 3d Mouse
SpaceNavigator is a 3D-mouse designed for working with 3D applications, such as Google Earth, CAD, games.

Here's how it is used:

SpaceNavigator for Notebooks
SpaceNavigator for Notebooks is a smaller version.


Math Models of 3D Input Control
See also:
Math Models of 3D Input Control
Old Models


Alternatives
Ergonomic Mouses
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