Public domain photos

The image shows a black and white drawing of a circle with a compass in the middle, surrounded by numbers. The background is white, and the circle is a representation of the astrolabe, which is a celestial object used to measure the direction of the sun.

The image shows a black and white drawing of a circle with a compass in the middle, surrounded by numbers. The background is white, and the circle is a representation of the astrolabe, which is a celestial object used to measure the direction of the sun.Open in library