I found something that looks easier to use and more accurate. What do you guys think about these little puppies?

http://www.usdigital.com/products/ma2/

The PWM type with ball bearings look like they will fit the bill. The best thing is, a simple pulsein command will read the absolute position. Also they are cheaper than going to mem's 360 degree inclinometers.
The ball bearing type are free spinning so a very small amount of weight will needed to keep them parallel with the gound. I have two ordered and should be able to have them working by this weekend. Then on to the code to do the vector graphics on the bob4.

Smitty