Ten real navigation compasses and compass stations: prismatic and pocket instruments, ship binnacles, military lensatic compasses, and solar compasses. Photograph credits: 1. File:Casella 6555 prismatic compass iso open.jpg; Slashme; CC0 1.0; https://creativecommons.org/publicdomain/zero/1.0/; https://commons.wikimedia.org/wiki/File:Casella_6555_prismatic_compass_iso_open.jpg; 2. File:Brunton.JPG; Matt Affolter; CC BY-SA 3.0 / GFDL; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Brunton.JPG; 3. File:Antique compass (11567429394).jpg; Thomas Quine; CC BY 2.0; https://creativecommons.org/licenses/by/2.0/; https://commons.wikimedia.org/wiki/File:Antique_compass_(11567429394).jpg; 4. File:Antique British naval compass.jpg; Vis M; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Antique_British_naval_compass.jpg; 5. File:San Francisco Maritime National Historical Park 2019, Balclutha, Magnetic compass binnacle.jpg; Frank Schulenburg; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:San_Francisco_Maritime_National_Historical_Park_2019,_Balclutha,_Magnetic_compass_binnacle.jpg; 6. File:Binnacle from the MH-1A Sturgis - USACE-p15141coll5-4140.jpeg; U.S. Army Corps of Engineers; Public domain; https://commons.wikimedia.org/wiki/Commons:Licensing; https://commons.wikimedia.org/wiki/File:Binnacle_from_the_MH-1A_Sturgis_-_USACE-p15141coll5-4140.jpeg; 7. File:Military Compass of J. Lindsay Brough.jpg; Science Museum Group; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Military_Compass_of_J._Lindsay_Brough.jpg; 8. File:US Army Lensatic Compass - Flickr - The Central Intelligence Agency.jpg; Central Intelligence Agency; U.S. government work; https://commons.wikimedia.org/wiki/Commons:Copyright_rules_by_territory/United_States; https://commons.wikimedia.org/wiki/File:US_Army_Lensatic_Compass_-_Flickr_-_The_Central_Intelligence_Agency.jpg; 9. File:Geodetic compass.jpg; wyclif; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0/; https://commons.wikimedia.org/wiki/File:Geodetic_compass.jpg; 10. File:Coles Universal Sun Compass 6314c.JPG; Clem Rutter; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Coles_Universal_Sun_Compass_6314c.JPG;