Public domain photos

The image shows a piece of wood with a ruler on top of it, along with a paper with text, a scale, and a cover. The background is dark, and the paper appears to be a photo of palisade.

The image shows a piece of wood with a ruler on top of it, along with a paper with text, a scale, and a cover. The background is dark, and the paper appears to be a photo of palisade.Open in library