Thank you for the replys.
If you are simply wanting to practice and learn a little about incidences then as he says, level the fuselage as close as you can to the centerline of the plane, and then check your incidences.
My question was how does one level a fuseage to the centerline of the plane, when there is not any level part on the airframe to reference from. Im just curious how one would go about doing such a thing. (generically speaking lets say that this plane is not a 3D plane, but rather a precision pattern plane)
I understand that one can bolt some sort of flat board onto the engine inplace of a prop.... but whos to say that the engine is correctly mounted to the engine mounts (could be 1-2deg right, left, up or down).
Thanks again for your time and advise!
Ryan