Light reflected from respective image elements of a workpiece is channeled through respective light channeling elements to respective locations of a spectrographic light disperser. The computing system includes a plurality of computing nodes including a domain manager node, the plurality of computing nodes forming a computing domain configured as an administrative grouping of the nodes administered by the domain manager node. A controller receives input signals from the sensors in order to record the weight of the container over time as liquid is poured from the container as the container is rotated.