OK, well not exactly. I know what wing incidence is. What I can't find is an explanation of HOW it is set and WHAT it is measured against. That is, what is used as the baseline to measure the incidence against. Also it does not seem to me that you can measure this even if you want to unless you have one of those expensive machines/tools. Can someone take the time to explan or give me a site with a good basic explanation. I keep reading all this stuff about how important it is. I've built about 30 ARF's and have no idea if the incidence was good or bad on any of them and probably couldn't tell anyway. So someone help me out here.