[Unclenick]

Homesick,

Getting it clear of electrical things can help, but if you have interference on your wires in your place, that can still mess with the scale. The simplest thing is to plug it into a computer UPS. Even one with worn out batteries still has some EMI filtering built into it. This can quiet a scale considerably.

I have a small granite surface plate on my bench sitting on two layers of medium pile carpet scrap. This damps out vibration and tends to change temperature slowly, which also helps.

Sometimes, particularly in winter, when the static starts to build up, it is worth wearing a grounding wrist strap to keep static on me from influencing the scale. Radio Shack sells them for assembling static-sensitive electronics components. The cheapest one was six or seven dollars last time I looked and is adequate to the task. They have a high internal resistance to bleed down charges rather than letting them reach a high current that makes a spark.

Adding a better draft shield can also make a big difference.