File:Halley compass variations 1720.jpg
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| Description |
Edmond Halley's New and Correct Chart Shewing the Variations of the Compass (1701), the first chart to show lines of equal magnetic variation. See also exhibit G201:1/1 at the UK National Maritime Museum. The NMM scan may however be protected by copyright in the UK. |
| Date | |
| Source | The English Pilot. The Fourth Book (London, Mount & Page, 1720). This image was found at [1], in the online exhibition Charting Neptune's Realm presented by the University of Southern Maine. |
| Author | Edmond Halley |
| Other versions | Halley compass variations 1702.jpg |
![[1]](http://usm.maine.edu/maps/exhibit8/17.jpeg){kind=link}
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 13:06, 2 May 2008 | | 1,000 × 1,260 (319 KB) | Jheald (talk | contribs) | {{Information |Description=Edmond Halley's ''New and Correct Chart Shewing the Variations of the Compass'', the first chart to show lines of equal magnetic variation |Source=''The English Pilot. The Fourth Bo |
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