365Astronomy 2" Parfocal Eyepiece Rings / Parfocalizing Rings - Set of Four
Parfocalising Rings for 2" Eyepieces - Set of Four
Parfocalizing Rings are being used for several purposes.
If you would like to match the focal position of each of your eyepieces or to match it with your digital camera, so that you won't have to refocus when swapping them, you would need few of these parfocalising rings...
In this set there are four parfocal rings.
Each parfocal ring is being secured with 2 grabscrews.
One Allen key is supplied with the set.