Working Model of Screw Conveyor Advanced Technocracy Inc. is Manufacturer, Exporter & Supplier of Working Model Of Screw Conveyor. In this properly designed model a revolving screws drives material from one level to another continuously. The unit is constructed of metal, and hard wood parts and Is fitted with 220 volts A.C. F.H.P. electric motor. Complete fitted on a large size wooden base of 75 x 30 cm.