ryan, the delta unifence consists of a main body with an aluminum auxiliary fence attached to do it that is easily adjustable forward or backwards by to knobs that hold it to the body of the unifence. installation is really easy as well.

http://www.woodworkingtalk.com/f12/d...l-board-11670/

this unifence owner has screwed the fence to the main body probably because he doesn't use the sliding feature.