p style="margin: 0px; text-align: justify;">Since you are teaching the scale a known weight, it is important to make sure the weight applied is as accurate as possible. Most scales allow you to choose what weight you are using for calibration, they can be 10%, 25%, 50% of the scales capacity. Once defining your calibration weight, and performing a calibration, the scale will mathematically calculate the weight placed on the scale above the calibration weight used.</p