3 ms·
http://virginflightdeck.blogspot.com/2010_09_01_archive.html http://virginflightdeck.blogspot.com/2010_09_01_archive.html search for "periscopic sextant"
by gcb0 14y ago
http://virginflightdeck.blogspot.com/2010_09_01_archive.html http://virginflightdeck.blogspot.com/2010_09_01_archive.html
search for "periscopic sextant"