Atlantic Codex (Codex Atlanticus), f. 26 verso, Leonardo da Vinci, circa 1480

On the left: water lifting machine; on the right: machine to pump water from a well inside a building. Date: circa 1480. Place of creation: Sala Federiciana. Medium: black chalk and wash, chalk and wash on paper, ink, pen. Collection: Biblioteca Ambrosiana. Leonardo da Vinci - Ambrosiana-Codice-Atlantico-Codex-Atlanticus-f-26-verso