A device for generating milling measurement data at an output includes a support structure. A measurement station is supported by the support structure for measuring an attribute of milled material collected thereon and outputting a measurement of the attribute to the output. A mill is supported by the support structure above the measurement station for, while engaged, performing a continuous milling action on a feed material, and continuously or regularly depositing milled material onto the measurement station wherein the measurement station can measure the milled material without interrupting the milling action.