Georeferencing a raster overlay using one point, true north, and a bar scale

Discussion created by lmazza on Feb 28, 2014
Latest reply on Mar 4, 2014 by lmazza
I have a bunch of maps I'd like to overlay in ArcMap but almost all of them don't have more than one point I can georeference. These are cave maps and they often have one entrance which I have coordinates for, an indication of true north, and a bar scale. I assume that's enough to get me in the ballpark but I'm not really sure where to start. Any tips would be appreciated.