Mercury M650 TECHNICAL DATA DOWNLOAD CATALOGUE Variable feed speed via inverter: from 1.5 to 12 m/minThickness visualisation via electronic displaySelf-diagnosis panel “check control”;Available units:roller unit (R)disc pack (H)brush assembly (B)Configurable up to 3 indoor units DRY PROCESSING Accessories:depressormagnetic platetouch screenquick-change brushesinverterautomatic electronic positioning of sanding beltscleaning groups