FYI. Before each session of loading ammo I make sure the scale is "True". I use an RCBS balance type. I take the pan and beam off until the next session. This time I placed the scale in order and put a .5 grain weight to check. I had an issue and after a closer look found a spider had made a home in the magnetic damper. Not that a spider has that much weight but it did matter. FYI.