shrug-l: Grid, magnetic and true north

Tripp Corbin tcorbin at
Thu Mar 9 09:46:19 EST 2006

You can create your own north arrow that would have the three
directional pointers. Look under Styles in the help for a more detailed
explanation. You would still need to calculate the declination for you
map but as you said that is do-able. 

Tripp Corbin, MCP, GISP

Associate Vice President, GIS/Mapping

ESRI Authorized Instructor

Keck & Wood, Inc.


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-----Original Message-----
From: shrug-l-bounces at
[mailto:shrug-l-bounces at] On Behalf Of Sykes, John
Sent: Thursday, March 09, 2006 9:41 AM
To: shrug-L at
Subject: shrug-l: Grid, magnetic and true north

I always include a scale and a north arrow on my maps (actually, I like
to use one of the compass roses that comes with ArcGIS) and tilt it
roughly towards "true" north (since my maps are all in the Albers
projection, the only place where "true" north and grid north are equal
is just east of Tallahassee near Monticello or Madison).

I was thinking that on some of my maps I would like to put the "three
point" north arrow that is seen on USGS Topos (Grid North, Magnetic
North and True North).

Does anyone have a slick way of doing this? Or do I have to find the
magnetic declination for the center of my map (I can obtain that from
the USGS website) and adjust for that and grid north manually?  Any

-- John 

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