OK. You guys got me. I guess it IS incredibly assinine to go messing with a compass indoors, at least in determining repeatability and/or accuracy. It's just so hard to get a new toy an NOT be able to play with it. I guess I'll have to go back to non-magnetic uses like measuring the incline of our stairway banisters - woohoo! I just have to be a little discrete in my dorky endeavors so the wife won't roll her eyes at me so badly that I have to take her to the ER to get them fixed. That almost happened during the last dork episode when I was using a white noise generator and a dB meter to adjust our sound system. Testing the directionality of my homemade Yagi TV antenna from the middle of the livingroom was another recent episode, come to think of it. BTW, that's another item that is best tested OUTSIDE - much like a compass ;-)