This (DX3?)is a high quality 2" low profile crayford focuser
(single speed)with 1-1/4" adapter in VGC; $95 shipped. I have it mounted on a flat focuser board on my dob, but there is a slight curve on two sides of the base so it could also be mounted on a large tube as well.
I just upgraded to a Feathertouch 2 speed, so I no longer need this item. Nice action, no problems at all. 2.25" height with adapter racked in; 1.75" travel.
Paypal (add 2.5%; given purchase priority) or Postal MO
Thanks for looking!
:>) Mark Dearing