Weighing scales and weighing instruments, namely, electrical dosing apparatuses and weighing-out apparatuses, namely, weight feeders, loss-in-weight feeders, solids flow meters, mass flow meters, and multiple-feed dosing stations, all for weighing materials to be weighed; and parts of weighing scales, parts of weighing instruments and parts of dosing apparatuses, namely, pre-feeders for feeding materials to be weighed, vibration feeders for feeding materials to be weighed, feed hoppers for fe...