Public domain photos

The image shows a small piece of pottery with a ruler next to it on a piece of paper. The pottery is brown and black in color and has a number written on it. At the bottom of the paper, there are color samples and a scale.

The image shows a small piece of pottery with a ruler next to it on a piece of paper. The pottery is brown and black in color and has a number written on it. At the bottom of the paper, there are color samples and a scale.Open in library