Truth. There's a lot to cover regarding electronic scales and how to decrease error with them.Any digital scale under $100 won't be great for fine measurements, the tech required costs money. A sub $50 beam scale will run circles around a digital scale until you are spending $200 or more.
Fluorescent lights, not letting the scale come up to temp, static electricity, etc can cause issues. You won't get a good scale for cheap as was mentioned.
The ones I've relied on are the Gempro and the A&D FX120i
A&D FX-120i Precision Balance,Compact Scale 122 g X 0.001 g,Draft shield,RS232,5year warranty,New: Amazon.com: Industrial & Scientific
A&D FX-120i Precision Balance,Compact Scale 122 g X 0.001 g,Draft shield,RS232,5year warranty,New: Amazon.com: Industrial & Scientific
www.amazon.com
I've also used the Hornady lock and load, and RCBS auto trickler. These can be verified against each other, or against a beam scale or known certified weights.
It's not too hard to check if the scale is drifting, especially if you know the weight of the empty pan. Once that number starts to change, it's time to re-tare.
I pretty much only use the electronic scales anymore except for out in the shed for occasionally checking the Dillon powder measure when running batches of pistol Ammo.
On a side note, the Dillon and RCBS powder throw are extremely consistent with most of the non-stick type powders.