Initially, setting this up so it works as it is supposed to can take a few attempts. If not positioned EXACTLY right, the focuser will jump the gears when you try to use it. I had to "modify" the focuser (file off a little here and there) so it would finally fit properly. It is a nice little "gadget" if you don't want to manually focus your telescope. I used this focuser quite extensively when I first got it but after the novelty wore off I went back to a "cable focuser" (a cable attachment that connected to the focusing know) which allowed me to focus easier, faster, and just as precise if not more precise than the electric focuser. I still have the electric focuser but it just sits in the box now....just in case I decide to put it on again or I will add it to the package if I sell my Meade ETX 105mm telescope. I hope this review was of some help. Please don't let ANY of my comments dissuade you from getting it yourself. Perhaps you will believe this focuser is..."the next best ...
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