Lyman Powder Measure Issues

I have this older model powder measure and starting yesterday, my display is jumping around and it’s not weighing with consistent results. The humidity increased a little over the past couple days, but not terrible in the reloading room and I run a dehumidifier. The problem is intermittent. Thanks for any advice.

Thanks, all. I’ll check into cleaning it. I’ve never done that and I’m not even the original owner. Yes, I do calibrate it and made sure there were no electronics around.

After two day of issues, the problem stopped yesterday and hasn’t occurred since. I’ve been checking using another scale, and it’s totally back to normal. I think it was the warmest it has been this year and it started cooling off yesterday. Even my humidifier stopped for the first time in a few days. So, I believe it is correlated to that and possibly combined with cleanliness or another issue…or death throes. I’ll keep it under watch.