The device transports the product using transportation belts from the receiving hopper into the buckets in which measuring takes place. When weight limit is reached feeding is stopped and the package-forming machine is informed that the dosing system is ready. Each bucket is fed by two transportation belts of different sizes. When the bucket measuring cells detect that a given measure will soon be achieved, only the narrow transportation belt continues with feeding. The device has proven reliable for weighing dry, non-sticky uniformed-size materials.