Public domain photos

The image shows a small piece of clay, known as a flint, next to a ruler on a white surface. The flint is brown in color and has a smooth, curved shape. The ruler is a standard measuring tool used to measure the size of the flint.

The image shows a small piece of clay, known as a flint, next to a ruler on a white surface. The flint is brown in color and has a smooth, curved shape. The ruler is a standard measuring tool used to measure the size of the flint.Open in library