Public domain photos

The image shows a man wearing headphones and a watch, working on a machine in a boiler room. On the right side of the image, there is a board with some text on it, and in the background there are pipes and other objects.

The image shows a man wearing headphones and a watch, working on a machine in a boiler room. On the right side of the image, there is a board with some text on it, and in the background there are pipes and other objects.Open in library