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.
Sguier. en ArmandPierre Sguier fr ArmandPierre Sguier Album Disdri page Savants d'Orszagh between ArmandPierre Sguier History of mechanical engineering PDold
Page 2023 Free-images.com. All images are Public Domain