Editing Screw thread (section)

== History ==
The screw thread concept seems to have occurred first to [[Archimedes]], who briefly wrote on spirals as well as designed several simple devices applying the screw principle. [[Leonardo da Vinci]] understood the screw principle, and left drawings showing how threads could be cut by machine. In the 1500s, screws appeared in German watches, and were used to fasten suits of armor. In 1569, [[Jacques Besson|Besson]] invented the [[screw-cutting lathe]], but the method did not gain traction and screws continued to be made largely by hand for another 150 years. In the 1800s, screw manufacturing began in England during the [[Industrial Revolution]]. In these times, there was no such thing as standardization. The bolts made by one manufacturer would not fit the nuts of another.<ref>{{Cite book|title=Engineering graphics|date=1987|publisher=Macmillan|others=Giesecke, Frederick E. (Frederick Ernest), 1869-1953.|isbn=0023427604|edition= 4th|location=New York|oclc=13498926}}</ref>