HIP-S-000232-0662 Design for a parabolic swing bridge, drawing by Leonardo da Vinci (1452-1519), taken from "Leonardo da Vinci" by Ludwig H Heydenreich (London, 1954) Credit: The Print Collector / Heritage Images /Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Collection: Heritage Images /Alinari Archives, Florence Object type: digital image Photographic technique: P digital image Technical info Image sizes (pixel): 4797 X 3661 Image sizes (cm at 300 dpi): 40 X 30 Image sizes (MB): 2.40 Color space: RGB