Hi Guys!
Byoung466 is dead on with the use of a flat surface and getting fore and aft stab or wing measurements to match (assuming you want 0 degrees incidence). I used to use the incidence meters and found them inconsistent and in some cases misleading. If you don't have a flat surface almost as long as a 2 meter fuselage, get an aluminum I beam type level (of reasonable quality -- sort through the stock at the store, sighting down the level for straightness) that is 6 ft long. Set the fuselage so the centerline (some might call it the thrustline -- but not to be confused with downthrust for the engine) of the fuselage is parallel to the top of your flat surface (in this case the top of your level). Now you can measure and repeat your measurements. In conjunction with this I have also used a block of wood that has an arrow shaft of the right length pressed into it. A variety of different height holes are drilled to accept a sharpened piece of music wire. Adjust the height of the pointer to the aft center line of a stab, for example, move it to the leading edge and see what needs to be done. I have found this to be more repeatable than using a ruler -- the pointer in the center of the centerline means you are right where you want to be (assuming the centerlines are accurate). Try it -- you'll like it! I have used this system now for several years maybe 10 -- since I got burned with the incidence meters twice in a row. For sure on 1 USA Star, an EMC2, and two Prophecies (one of which got a second set of wings after trying to land through some trees in Chicago...The last model, a Temptation, got it also but I had wing adjusters on it and ended up using them to increase the incidence (from 0) a turn and a half positive -- probably to where the drawings called for... some people learn the hard way. The previous ships were happy at zero.

My Impact showed up yesterday so lets keep the thread alive and keep those pictures and discoveries coming! At first look everything looks great. I have not checked for things mentioned earlier in the thread like wing twist -- we'll see.

Now if I can figure out where the center line of the Impact is...

Hope this helps.

Later, Tom