It is a base class for output manipulators only.
Watchers had a reputation in the immortal world as being manipulators.
Specific projects have included thermoacoustic refrigeration, automotive wheels and tires, bioengineering applications, robotic manipulators, washing machines and MRI scanners.
It is developing new techniques for visual guided control of robot manipulators using several uncalibrated cameras.
One controversy is the effect of pressure groups and professional media manipulators will move in on this field.