This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Marinestrichplatte. de Abbildung eines Bildes durchs Marineglas die senkrechte und waagerechte Strichplatte sind zu erkennen Fernglas Typ Compass Aqua Own Eomer no Check categories June de Fadennetz Reticles
Page 2023 Free-images.com. All images are Public Domain