I have here a Meade #531 R/A clock drive. Recently acquired a set of GoTo motors so I no longer need this. Works perfectly. In excellent shape.
Fits Meade mount models 285, 395 or 4500.
Attaches in seconds. Uses 3 AA batteries. Fully compensates for effects of earth's rotation. North-South switch permits operation in Northern or Southern hemisphere.
No ownner's manual included but installation is pretty much "idiot proof". Attaches via thumb-knob to the 1.25" long shaft on the latitude scale side of mount and engages the gear on the R/A worm. If your mount does not have this shaft AND gear you CAN NOT use this clock drive (see arrows in photo).
I've seen these going for anywhere from $89.95 to $129.95 plus shipping and without batteries depending on where you get them. Get this one for $50.00 shipped to your door 'plug-n-play' ready with Duracell batteries included.
USPS Money Order or PayPal (no fees!) ONLY please.
Thanks for looking,