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.
Telescopic alidade. navy mil asp id Navy photo by Mass Communication Specialist nd Class Michael Lantron Alidades PDUSGovMilitaryNavy Aboard USS Chosin CG
Page 2023 Free-images.com. All images are Public Domain