4. Diagram showing where Brunelleschi would have stood to test his device (note the glaring error of this image which shows Brunelleschi's cupola and lantern as completed!)
5. Filippo Brunelleschi (1377-1446) and the Birth of the Renaissance Diagram of the optical instrument Brunelleschi used to check out his perspective drawing. Drawing on left, mirror on right.
6. Reconstruction of Brunelleschi's device with a peephole in the drawing board and a mirror to test his perspectival drawing against the actual view
7. Il Duomo, Florence Cathedral (1296-1412) Dome by Brunelleshci in 1420