Parallel looking from above. Measure from the hingeline at one tip of the stabilizer to the flap hinge line, same from the other tip. They need to be exactly the same.
Gahh! Sorry for putting words into your mouth, Brett.
Yes -- that, too. I prefer to measure from a point on the center of the fuselage instead forward to the TE, but it's accomplishing exactly the same end. I can't remember this stuff to talk about, but you can bet that it gets measured about ten different times before I ever even get the glue bottles out.
I don't
think this can be screwed up on an ARF Nobler, but if you check the tail against the fuse the way I do it, then be sure to check the wings, too -- Brett's method will tell you if they're correct with respect to each other: mine will tell you if each one is correct to the fuse (and then if the fuse is straight you know they're correct to each other).