Public domain photos

The image shows a close up of a pressure gauge on a white cloth-covered table. The pressure gauge has a black face with white numbers and a red needle indicating the current pressure. The cloth is white and provides a stark contrast to the black of the pressure gauge.

The image shows a close up of a pressure gauge on a white cloth-covered table. The pressure gauge has a black face with white numbers and a red needle indicating the current pressure. The cloth is white and provides a stark contrast to the black of the pressure gauge.Open in library