NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2017 Dec 29, 19:26 -0800
And don't forget the astrocompass and they sky compass, both used for checking the accuracy of the directional gyro and the sky compass used especially on polar flights. See prior discussion:
http://www.usaf-nav-history.com/Tools/PolarSkyCompass.jpg
http://fer3.com/arc/m2.aspx/Navigation-Fog-LaPook-feb-2007-g2191
http://www.fer3.com/arc/img/102191.imgp2002.jpg
http://www.fer3.com/arc/img/102191.imgp2015.jpg
http://www.fer3.com/arc/img/102191.imgp2012.jpg
http://www.fer3.com/arc/img/102191.imgp2005.jpg
http://www.fer3.com/arc/img/102191.imgp2006.jpg
http://www.fer3.com/arc/img/102191.imgp2017.jpg
http://fer3.com/arc/m2.aspx/Sky-compass-polarizing-sunlight-compass-LaPook-nov-2007-g3767
http://fer3.com/arc/m2.aspx/Navigation-Fog-LaPook-feb-2007-g2188
http://fer3.com/arc/m2.aspx/Sky-compass-polarizing-cunlight-compass-LaPook-nov-2007-g3766
http://fer3.com/arc/m2.aspx/Re-Navigation-FogSKY-COMPASS-LaPook-mar-2009-g7656
http://fer3.com/arc/img/102218.sky-compass.pdf
http://fer3.com/arc/m2.aspx/Navigation-Fog-LaPook-feb-2007-g2182
http://fer3.com/arc/m2.aspx/Navigation-Fog-LaPook-feb-2007-g2188
http://fer3.com/arc/m2.aspx/Navigation-Fog-LaPook-feb-2007-g2193
http://content.time.com/time/magazine/article/0,9171,935539,00.html
http://www.polarization.com/compass/compass.html
http://www.polarization.com/viking/viking.html
gl
