Metallize slurry viscometer

A device for controlling metallized slurry viscosity is described. The device also provides uniform milling of the slurry and retards solvent evaporation. It consists of a rotating cylindrical channel, a steel roller and a mechansim to indicate the angular position of the roller. A change in slurry viscosity is indicated by a change in the angular position of the roller. Control of the metallized viscosity is achieved by adding solvent to the slurry in the channel when the roller scale approaches the predetermined upper viscosity limit.