I am looking at the CT 33E dust collector. As I was going through the 2007 catalog from the U.S. site, I saw something interesting. On the big picture of the CT 22E on page 130 of the catalog there is a third green knob--2 small, 1 large. What is the top small knob for? It appears to have a bunch of numbers on it. I do not see this knob on the 33.
Just curious.
Just curious.