Navigational instrument

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11	IVAN!TAFTEBERG!JAKOBSEN,!JESPER!MATTHIASEN! Geomat.dk:!Historical!Instruments!of!Navigation!–! Add to Reading List Source URL: www.geomat.dk Language: English - Date: 2014-01-02 12:02:02 Celestial navigation Engineering Sextant Quadrant Octant Astrolabe Reflecting instrument Navigational instrument Technology Science Measuring instruments
12	PDF Document Add to Reading List Source URL: ckraju.net Language: English - Date: 2008-08-19 08:34:26 Sailing Celestial navigation Longitude Marine chronometer Sextant Lakshadweep Compass Latitude Navigational instrument Navigation Aerospace engineering Exploration