A great amount of work got done thanks to the help of everyone here. Below is the latest prototype. It's printed on paper, but another version is making the rounds that was printed on indestructible HP LaserJet tough paper, a kind of polyester film available in consumer sizes.

The Latest Prototype

I was also able to get the ART system up and running for the AIDS clinics. Based on the observations we made earlier in the week, I was able to hack into the Ruby on Rails app and get it to work along with the bar-code scanner. Now MUAC data goes straight into the database--a full prototype system, working end to end! Sweet! And it works pretty much as expected (minus bar-code reader) on my touchscreen Nokia internet tablet.

ART application on the Nokia 800

So, next week is testing and observations. That should give me ample time to make adjustments before heading back to the states.