Spiral Brush Dampening by Robertson There's a reason why most new single-width presses are equipped with spiral brush dampening! It is a highly superior system of delivering fountain solution vs. older ductor systems. Replace your old system today with a Robertson spiral brush dampening system! The Robertson system is built for rugged environments, and includes a stainless steel water tray, stainless steel fountain roller and independently motorized spiral brush roller. Each system includes independently controlled motorized fountain rollers, which can also be regulated by a master control conveniently located at the folder. Automatic press speed following circuitry enables delivery of just the right amount of fountain solution. Preprogrammed for four separate ramping stages, the system can also be easily customized for the start-up you prefer. Contact Robertson for more information on this excellent, affordable system.