Thanks Tall Paul,

I think I'm starting to get it. Still confused, though. Dumb question: What is "the horizontal"? Horizontal in reference to what? Maybe an imaginary line that runs through the geometric center of each fuselage former? I guess I'm screwed up on the definitions.

I think that what you're say is that when specifying wing incidence, the angle of incidence can be in reference to some arbitrary zero. But suppose I had an R/C model for which I had no plans. Would it be possible to measure wing incidence or stab incidence?

It seems that the designer must have had some relationship between the fuse and the wing in mind when he arbitrarily decided where zero was going to be on the drawings. Seems like the line along the length of the fuse (WW00, FRL, etc.) must be defined in relation to some feature or geometry of the plane. Right- or am I missing something? Thanks again for your help.

Marl