I am selling a JMI NGF-SE Manual Focuser for an SCT. This duplicates a 2" Visual Back and allows fine focusing manually w/o moving the main mirror (thus no mirror shift).
Focuser is in perfect shape and was used sparingly. I replaced the ridiculously short set screws with longer set knobs (look exactly like the originals except longer) for easier adjustment. Ring that screws onto the back of the SCT has set screw marks but is unseen when mounted on the telescope.
$110 shipped CONUS. Paypal preferred, always try to ship same day as payment is received.
Will post pictures tomorrow.