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.
Quart de cercle nu Encyclopdie. fr Quart de cercle mobile une lunette avec micromtre Bnf Gallica Encyclopdie extrait d'une planche de l'Astronomie Diderot other versions PDold Uploaded with Quart de cercle
Page 2023 Free-images.com. All images are Public Domain