Frequently Asked Questions...
What's the importance of the map key or compass rose on a map?
Why are they so important to a map?
Answer:
In addition to telling you which way north, is, a compass rose, often found on nautical charts indiced the difference between true north and magnetic north. This allows one to use either one without having to convert.
The key gives all sorts of information such as the declinatino, the scale, countour interval, year of poublication and possibly some insights into map features.
Obviously, knowing distance, direction and declination/magnetic variation are essential things to know in order to navigate.
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Compass Key
Hurricane Ivan Perdido Key Florida Compass Point
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