See also

• Azimuth
• Beam compass
• coordinates
• fluxgate compass
  Fluxgate compass
  The basic fluxgate compass is a simple electromagnetic device that employs two or more small coils of wire around a core of highly permeable magnetic material, to directly sense the direction of the horizontal component of the earth's magnetic field...
  
  
• gyrocompass
  Gyrocompass
  A gyrocompass­ is a type of non-magnetic compass which bases on a fast-spinning disc and rotation of our planet to automatically find geographical direction...
  
  
• Gyrosin compass
• gyrostatic compass
• inertial navigation system
  Inertial navigation system
  An inertial navigation system is a navigation aid that uses a computer, motion sensors and rotation sensors to continuously calculate via dead reckoning the position, orientation, and velocity of a moving object without the need for external references...
  
  
• pelorus
  Pelorus (instrument)
  In appearance and use, a pelorus resembles a compass or compass repeater, with sighting vanes or a sighting telescope attached, but it has no directive properties. That is, it remains at any relative direction to which it is set. It is generally used by setting 000° at the lubber's line. Relative...
  
  
• radio compass
• radio direction finder
  Radio direction finder
  A radio direction finder is a device for finding the direction to a radio source. Due to low frequency propagation characteristic to travel very long distances and "over the horizon", it makes a particularly good navigation system for ships, small boats, and aircraft that might be some distance...
  
  
• surveyor's compass, or circumferentor

External links, resources, and references

• USGS Geomagnetism Program
• Amir Aczel
  Amir Aczel
  Amir D. Aczel is a lecturer in mathematics and the history of mathematics and science, and an author of popular books on mathematics and science.- Biography :...
  
  , The Riddle of the Compass: The Invention that Changed the World, ISBN 0-15-600753-3
• Joseph Needham, Colin A. Ronan: The Shorter Science & Civilisation in China Vol 3 Chapter 1 Magnetism and Electricity.
• Science Friday, "The Riddle of the Compass" (interview with Amir Aczel, first broadcast on NPR
  NPR
  NPR, formerly National Public Radio, is a privately and publicly funded non-profit membership media organization that serves as a national syndicator to a network of 900 public radio stations in the United States. NPR was created in 1970, following congressional passage of the Public Broadcasting...
  
   on May 31, 2002).
• Paul J. Gans, The Medieval Technology Pages: Compass
• Frederic Lane, "The Economic Meaning of the Invention of the Compass", American Historical Review, vol. 68, pp. 605-617 (1963)
• The Tides By Sir William Thomson (Lord Kelvin)
• Evening Lecture To The British Association At The Southampton Meeting on Friday, August 25, 1882 http://zapatopi.net/kelvin/papers/the_tides.html. Refers to compass correction by Fourier series
  Fourier series
  In mathematics, a Fourier series decomposes periodic functions or periodic signals into the sum of a set of simple oscillating functions, namely sines and cosines...
  
  .
• http://en.wikipedia.org/wiki/Image:Liquid_filled_compass.jpg
• Admiralty manual of navigation, Chapter XXV The Magnetic Compass (continued) the analysis and correction of the deviation, His Majesty's Stationary Office, London, 1914.
• Arrick Robots. Robotics.com Example implementation for digital solid-state compass. ARobot Digital Compass App Note
• Williams, J.E.D. From Sails to Satellites. New York: Oxford University Press, 1992.
• Frances Gies and Joseph Gies
  Frances Gies and Joseph Gies
  Frances Gies and Joseph Gies are historians and writers who have collaborated on a number of books about the Middle Ages, and have also written individual works. They were husband and wife...
  
  , Cathedral, Forge, and Waterwheel subtitled "Technology and Invention in the Middle Ages".
• Petra G. Schmidl Two Early Arabic Sources on the Magnetic Compass