Public domain photos

The image shows a box of pens sitting on top of a table next to a ruler, with a color chart on the left side of the table. The box contains a few pens, and the ruler is likely used to measure the color of the pens.

The image shows a box of pens sitting on top of a table next to a ruler, with a color chart on the left side of the table. The box contains a few pens, and the ruler is likely used to measure the color of the pens.Open in library