I used to consider it to be a honor to be introduced as an expert in my field until I looked up the definition in Funk and Wagnall's. I found an ex is a has been and a spurt is a drip under pressure.
I've worked on equipment and built a clean room for emissions labs, so I'm aware of the scales you describe. The medical scale I use has a top, back, front, and doors on both sides. It's pretty stable and I reload in a conditioned room in the house.
Thanks. I would prefer digital if I can find one that's accurate and don't drift. I'm currently using my son's medical scale accurate to .001 grams. I'm going to have to give it back shortly.