US Patent: 103,701 
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| Improvement in Correcting the Deviation of the Mariners' Compass
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	        Patentee:
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 | Louis Francois Alexandre Arson (exact or similar names) - Paris,  France |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Granted: | 
May 31, 1870 | 
 
 
 
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		  Patent Pictures:
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Condensed view of all the patent's drawings  |  
 
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        Description: |  
| Fixed and adjustable compensators are applied to a sensitive mariners' compass to correct for the magnetic influences of a ship's cargo and structure. |  
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