Public domain photos

The image shows a small piece of wood with a ruler next to it on a white surface. The wood is black and brown in color, and the ruler is white. At the bottom of the image, there is a scale with different colors and numbers written on it.

The image shows a small piece of wood with a ruler next to it on a white surface. The wood is black and brown in color, and the ruler is white. At the bottom of the image, there is a scale with different colors and numbers written on it.Open in library