true north
John_H wrote:
John Popp wrote:
In setting up the anemometer I had to set it to magnetic north, being in
central fl. I know the difference is not much but having been employed at a
testing lab for over ten years I know "close enough is not a value" If
anyone could point me in the right direction it would be appreciated.--
Any decent map will have the magnetic correction on it... usually a
small arrow and the number of degrees from TN.
Isn't there a daily variation? And an annual one?
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