Parfocal Ring for 1.25-inch Eyepieces - One piece only
Parfocalising Ring for 1.25" Eyepieces - Black
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...
The ring is being held to the nosepiece of the eyepiece by two wormscrews.
Allen key is included.
This is just one black anodized parfocalising ring.