I need to align an unprojected CAD file in ArcMap. I know how to adjust the False Easting and Northing, but this CAD file also has a rotation issue. I already adjusted the Central Meridian from -76.0 to -80.0, which helped, but it's still off. My adjustments of the Central Meridian parameter have all been trial and error.
Is there a way to measure the angular adjustment needed for the Central Meridian? See picture below: