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.
Garmin GPS at Greenwich Observatory. Royal Observatory Greenwich indicating that the WGS reference meridian is arcminutes or about arcseconds to the east of the Prime Meridian about meters at the indicated latitude own Brian Dell region GBheading Prime meridian in Greenwich Garmin GPSmap series
Page 2023 Free-images.com. All images are Public Domain