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.
Keywords from Image Description:
Vinci Leonardo Da Ingranaggio. Ingranaggio Wooden gears with persons drawing Book scan of Anna Suh publisher Leonardo da Vinci Skizzenbcher Bath Parragon books ISBN scanned with dpi grayscale late early th century creator Leonardo da Vinci File pixels file size KB PDold War machines by Leonardo da Vinci Ingranaggio