Su Song's Clock Tower Treatise Published

1094

Su Song's illustrated treatise on his astronomical clock tower received its official printed publication, preserving in meticulous detail the engineering of the most complex mechanical device of the medieval world. The woodblock-printed diagrams showed every gear, every water wheel, every automaton figure - technical documentation of a precision that would not be matched in Europe until the Renaissance. The book outlived the machine it described by nine centuries and counting.