#3. 15th-century wheel by Taccola
In 1449 Taccola published his manuscript, De machinis (Concerning machines), in which he restated many of the devices from the long development process of his first treatise. Drawn with black ink on paper and accompanied by hand-written annotations, Taccola depicts in his work a multitude of ‘ingenious devices’ in hydraulic engineering, milling, construction and war machinery. His method of representation still owes much to medieval manuscript illustration.