 Since the last restoration the Archimedes' screw can be driven by either the Lister engine or by wind power.The crown wheel at the bottom of the upright shaft drives a "layshaft" which is connected by belt to a second layshaft.The driving gear on the end of this layshaft has 16 teeth; it drives a gear with 64 teeth on the axle of the Archimedes' screw, which is inclined at 19°.