[Qgis-user] Re: measure angle tool

[Tom]

  Why is it when I use the "Measure angle tool"(grouped with the "info" 
tool), if I draw a line from 0 and then run the cursor around it a 
clockwise circle, the measured value goes  0 to 180 and  -179 to -1 to 
0, I want to measure the obtuse angle like a compass, 0-360. nothing in 
the help files. I have no clue if this is a built in plugin or add-in.

Also, I can't seem to get the Azimuth and distance plugin tool(0.8.5) to 
work.  I want to draw a line that is true North. NO instructions on 
their website.

And I'm using these to compare true north to magnetic north as 
georeferenced raster files. The raster files are drawn to magnetic 
north, with lines going to the 4 cardinal points as magnetic, but my 
base map projection is in True North(+proj=utm +zone=10 +ellps=WGS84 
+datum=WGS84 +units=m +no_defs). I want to georeference using magnetic 
bearings.  I know the declination and the base map(geotiff) is correct.

thanks,
Tom