Needed panning with a head that did not have the panning function.
Will this work with an Oben tripod?
Yes, it will work on any tirpod. you do need to be able to adapt to 1/4-20 if your tirpod only excepts standard camera mounting, and also you need to get back for mounting Camera on the PB-70. I have my ball head mounted on the PB-70 so it maintains the set angle when I am Panning:
My setup is like this camera on top of ball head, ball head on top of PB70,
PB-70 ontop of tripod, tripod Level on ground.
Does the knob actually rotate the assembly or is it only a set/locking screw?
sorry it Took so long To answer, computer trouble.
the knob is a locking knob only, but I am quite happy with the unit. i use it every day, I do a lot of pans and it is a great addition to my equipment