. External links Interactive digital astrolabe by Alex Boxer A digital astrolabe (HTML5 and javascript) Astrolabe Tech Made ... Not So Easy paper astrolabe generator, from the ESO "Hello World!" for the Astrolabe: The First Computer Video of Howard Covitz's Presentation at Ignite Phoenix, June 2009. Slides for Presentation Licensed as Creative Commons by-nc-nd. Video of Tom Wujec demonstrating an astrolabe. Taken at TEDGlobal 2009. Includes clickable transcript. Licensed as Creative Commons by-nc-nd. Archive of James E. Morrison's extensive website on Astrolabes A working model of the Dr. Ludwig Oechslin's Astrolabium Galileo Galilei watch Ulysse Nardin Astrolabium Galilei Galileo: A Detailed Explanation Fully illustrated online catalogue of world's largest collection of astrolabes Mobile astrolabe and horologium Medieval equal hour horary quadrant Analog computers Ancient Greek astronomy Greek inventions Ancient Greek technology Astrometry Astronomical instruments Historical scientific instruments Inclinometers Astronomy in the medieval Islamic world Technology in the medieval Islamic world Mechanical calculators Navigational equipment