Differential dosing of non-free-flowing products at high volumes. For flour, semolina, bran and other non-free flowing products. Can be used as a mass flowmeter, to measure the weight and the throughput of a given product stream or as a mass flow controller to control accurate throughput in which the total weight of the material is measured. In addition to its application as a check scale, this unit can also be used for producing blends and for providing a preselected quantity of material in a production process.