JohnnyDollar
Well-Known Member
I guess I'm kinda ignorant but what is the difference between true north and magnetic north? which one do the compasses use and why?
what does this mean in english....lolStalk Hunter said:http://en.wikipedia.org/wiki/Magnetic_declination
Best way to explain it. Plus there is maqnatic north, and true north. Compass pull from the magnetic field in the hudson bay area.
Also you have to use the declination diagram at the bottom of map.
Depending on what you are doing. Such as grid azmith and magnatic azmith. you have to convert these based on declination diagram L.A.R.S rule
JGreg said:what does this mean in english....lolStalk Hunter said:http://en.wikipedia.org/wiki/Magnetic_declination
Best way to explain it. Plus there is maqnatic north, and true north. Compass pull from the magnetic field in the hudson bay area.
Also you have to use the declination diagram at the bottom of map.
Depending on what you are doing. Such as grid azmith and magnatic azmith. you have to convert these based on declination diagram L.A.R.S rule
BSK said:The difference (declination) between Magnetic North and True North is marginal for most of TN, running from no difference near Memphis to only about 3 to 3.5 degrees in East TN.
Basically, don't worry about it in TN unless you are surveying.