GSO RC 10 collimation ring

[graham.hobart (Graham stevens)]

Hello folks, still awaiting the arrival of my Feathertouch for the RC 10 but have bought one of those collimation rings for the focuser from BIntel.
Question is- I am assuming this helps collimation by placing the focuser and therefore the camera flat to the secondary -is there anyway to check just how flat and aligned this is - bearing in mind the mirrors need collimating as well?
Do I have to buy CCD inspector?
Cheers
Graz

[KenGee (Kenith Gee)]

This should explain http://www.youtube.com/watch?v=vxviegvQns8

[Logieberra (Logan)]

This might help, six up from the bottom: RCOS collimation video by Ken Crawford

http://www.rcopticalsystems.com/support/resources.html