This scale does not weigh really centigram! She does not have the specified accuracy, and in addition it derives ... It has a catch (e) 0 to 0 which brings all the neighboring values. Make the following experiment: put a bottle cap, made the tare, then put a drop of water (about 2cg) and the display remains at 0 because of the notch. To escape, you must put much more! It is possible the effect DEliminate guts by not using the tare command, but by weighing the whole (container and the product) and then subtracting the container weight. The continual slippage measured weight gives little meaning to the display of grains. The guts to use a Scam widely used on bathroom scales to make it look superior accuracy. It is used on this scale to give a false impression of stability.