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mapping for a changing california

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Welcome to the Kellylab blog! We post fun facts and things that catch our eye. Occasionally I wax lyrically about a topic of interest. 

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July 06, 2010

Magnetic declination calculator

July 06, 2010/ Maggi Kelly

NOAA's magnetic declination calculator is here. Magnetic declanation is the difference between magnetic north and true north. Berkeley's declination is 14° 16' E. This is useful information for calibrating your compass or your GPS. Most GPS allow bearings to be calculated on either true or magnetic north, even the lowly iphone compass allows this.

July 06, 2010/ Maggi Kelly/
gps, mobile, tools

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