Yesterday, I noticed a couple of old ice packs in my garage. These are typically used for keeping shipped perishable items cool during transport. The type of ice packs I have consist of liquid in a sealed plastic bag. I immediately thought that these would serve as a great platform for testing our 'Working Scale' app on Android devices. So, we setup a stack of two ice packs and set our Nexus 7 tablet on top (see picture).
The results of a few tests are very encouraging. The tablet rests more stabily on the ice packs than it does on a slightly inflated zip-lock sandwhich bag (which was our previous favorite platform). Also, stacking two or more ice packs increases the sensitivity of the tablet to mass. If you have some ice packs in your freezer that you aren't using, try them with 'Working Scale' and see how they work for you.
In case you haven't noticed yet, we published version 2.0 of the free version of 'Working Scale' yesterday. This is a major update. We have tweaked the app engine to give more stable readings, and we fixed some UI issued for tablets. We hope that this improves the accuracy of the measurements for all Android devices. We know that it takes some care using this app to get good results, especially when you are working near the lower mass limit for reliable mass determination (about 5 grams).