Public domain photos

The image shows a small piece of paper with a QR code on it next to a ruler, and a glass object with some objects in it placed on the surface. At the bottom of the image, there is a color scale with different colors, and on the paper there is some text and a barcode.

The image shows a small piece of paper with a QR code on it next to a ruler, and a glass object with some objects in it placed on the surface. At the bottom of the image, there is a color scale with different colors, and on the paper there is some text and a barcode.Open in library