Head Tracking System help

[willettfx]

Hello People, Love the site
In this Head Tracking System Calibration video show a device
http://youtube.com/watch?v=38GOCE2BNVw
What is this device called? And where do you get it?
My interest is Not for video, But for animatronic projects as a waldo system
There is a pan and tilt, Could a 3th servo be added to make roll movement ?
Here some pictures of my last project
http://img.photobucket.com/albums/v229/willettfx/32feet.jpg
http://img.photobucket.com/albums/v229/willettfx/inside.jpg
http://img.photobucket.com/albums/v229/willettfx/whiteback.jpg
http://img.photobucket.com/albums/v229/willettfx/IMG_1498resized2.jpg
http://img.photobucket.com/albums/v229/willettfx/IMG_1371greatshotresized.jpg
For video
http://www.youtube.com/watch?v=W29pAUyKVZ0
http://www.youtube.com/watch?v=-0rZVBQMBGU
http://www.youtube.com/watch?v=OJLji1KnkZ0
http://www.youtube.com/user/willettfx

Thanks
Gary

[VRflyer]

Great work Gary. I send you a PM