This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
SonnetteLonard. fr Schma de Lonard de Vinci sur le fonctionnement d'une sonnette de mouton pour l'enfoncement des pilotis Codex Atlanticus Lonard de Vinci ime sicle PDold Mechanical engineering by Leonardo da Vinci Codex Atlanticus
Page 2023 Free-images.com. All images are Public Domain