Public domain photos

The image shows a close up of a piece of fabric with a ruler next to it, and a black and white photo of fibers scattered across the cloth. The fibers appear to be of various sizes and shapes, and the ruler is likely used to measure the size of the fibers.

The image shows a close up of a piece of fabric with a ruler next to it, and a black and white photo of fibers scattered across the cloth. The fibers appear to be of various sizes and shapes, and the ruler is likely used to measure the size of the fibers.Open in library