That jeweler's scale is a POS. They have tons of them on eBay all the time. I've heard from more than one source that they aren't good for reloading. They don't stay accurate, if they are to start with, and you have to recalibrate all the time during use. Doesn't it weigh in grams and then you have to figure out grains to grams? I'd toss it. It won't be very reliable at all.