Archimedes' screw the screw and casing could be cast together as a single piece in bronze. The design of the everyday Greek and Roman water screw, in contrast to the heavy bronze device of Sennacherib, with its problematic drive chains, has a powerful simplicity. A double or triple helix was built of wood strips (or occasionally bronze sheeting) around a heavy wooden pole. A cylinder was built around the helices using long, narrow boards fastened to their periphery and waterproofed with pitch. The screw was used predominately for the transport of water to irrigation systems and for dewatering mines or other low-lying
Archimedes (crater) in what he thought to be a mid-sized crater in the south of the rim of what is now Plato, between that crater (then as "Lacus Panciroli") and Mare Imbrium (then as "Mare Astronomicum"). The stretch of lunar surface between Archimedes and Autolycus was the site of the crash-landing of the Soviet probe Luna 2. This was the first craft to reach the surface of the Moon, landing September 13, 1959. By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Archimedes. The following craters have