I have a Van Slyke Engineering Newt-Crayford focuser for sale due to a change of ATM plans. It's a model NCF2 and has the fine focus option and the smoothest motion I've seen on a Crayford. It has never been installed. This is a very high quality focuser, but it's a bit heavy at 2.5 pounds. Original cost was $495. Asking $350 plus shipping.