|
Leon if it is anything like the 10:1 WO focuser I bought and it is on the top of the barrel of the focuser then it could be for the finderscope foot. With my 10:1 the finder foot can be switched from oneside to the other simply by removing the grubscrew and screwing in the focuser foot.
Can you post an image of where the grub screw should be normally?
|