limax share some of his passion for global navigation in this four hundred twenty-seventh edition of the GeoGearHeads. Tom Scott on why the Prime Meridian isn't at 0° Getting Started in Celestial Navigation (The Sextant) Astrolabe – The missing manual How to make your own Astrolabe TED talk on Astrolabes Mariners Astrolabe Geocoin – Antique Bronze The live video session from this live stream can be found on YouTube. Subscribe to the feed: Apple Podcasts RSS Stitcher Email: [email protected]