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[aprssig] grads and other funny angle measurements

Jon Kåre Hellan hellan at acm.org
Wed Apr 15 19:41:37 UTC 2009


Alan P. Biddle wrote:
> Dividing a circle into 400 grads has the advantage that it is very easy to
> mentally compute a reciprocal heading.  Getting this right is of some
> interest when you are calling in artillery fire.  ;)

Going hiking when one of you has a 360 degree compass and another a 400 
grad one gets interesting. We quickly got rid of the 400 ones.

Jon LA4RT



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