_EI_5508-2GKPTXM-farina-bona-eyeturner-georg-berg.jpg

https://www.alamy.com/while-outside-the-mill-wheel-is-driven-by-water-power-inside-the-mill-an-ancient-mechanism-still-ensures-the-perfect-fineness-of-farina-bona-in-circolo-donsernone-switzerland-image442440172.html