SCALEBAR LABEL COLOR 0 0 0 SIZE SMALL END STYLE 0 SIZE 180 8 POSITION lc COLOR 0 0 0 UNITS MILES INTERVALS 2 TRANSPARENT TRUE STATUS EMBED END
I didn't even have a projection prior to adding the scalebar, I would just use the same projection per layer. So, I added that same projection outside the layers:
PROJECTION "proj=latlong" "ellps=WGS84" "datum=WGS84" END
Currently the scale bar comes up correct in size and intervals (2). The distance is 40 miles, which is definitely incorrect.
Any ideas on how to fix this?