"Ansley W. Sawyer" wrote in message
...
Dear Hoges,

I am somewhat unclear as to what you are asking but...

Your GPS will tell you the course from your position to your waypoint so
if the waypoint is the compass rose center you would plot it as the
reciprocal of the course from the compass rose to your position. Easier
still is to continue the line from your position through the center of the
rose and out the other side to read the course from you to the rose. Do
not forget to adjust your gps to give you true bearings or to read the
magnetic circle of the rose. True to true or mag to mag.

Ansley Sawyer
SV Pacem

Thanks Ansley
I (think) I mean do I have to take account of TM when using GPS? I can do
the reciprocal easy enough but am I imagining things when I have to take
into account variation? Or is GPS TT on a chart?

Sorry if that's not clear - half way into a bottle of McLaren Vale port for
those familiar with South Australian fortifieds.