It states on the website that the resolution is 0.01g.
0.01 grams = 0.154323584 grains. It looks like they rounded it up to 0.2 grains.
However, you're seeing fluctuations between 77.4gr and 77.6. This probably means that the item is around 77.5 gr.
Did you weigh the items with your manual scale? We need to know what a known very accurate scale says the items weigh.
Try weighing an item that is lighter, somewhere in the 10gr to 30gr range.
0.01 grams = 0.154323584 grains. It looks like they rounded it up to 0.2 grains.
However, you're seeing fluctuations between 77.4gr and 77.6. This probably means that the item is around 77.5 gr.
Did you weigh the items with your manual scale? We need to know what a known very accurate scale says the items weigh.
Try weighing an item that is lighter, somewhere in the 10gr to 30gr range.
