The scale bar won't work on my map when I try to insert one, is there a way to define a scale manually?
That's a factor of a million out, possibly. 1 mile = 1600m.
Are you importing a cad file - is it in mm instead of metres? (or visa versa)
If you're then measuring in km and not miles you would get 0.0016........, if my mental arithmaguestimation is correct.
All my data is defined as British National Grid
I suspect you need to check your data and your data frame units before you worry about the layout view
Specifying a coordinate system—Help | ArcGIS for Desktop 0.016 miles sound like you have decimal degree data and no coordinate system defined somewhere
Just the one data frame
Do you have multiple data frames, and if so, is the one for your scale bar activated?
An area which I know is miles across comes up as 0.0016 miles, so I need to define it myself in some way?
Yes, I looked at that and tried changing the display units etc. When I put a scale bar on the map it is not right, it is much too small of a distance.
Please elaborate: "The scale bar won't work on my map"
Map elements—Help | ArcGIS for Desktop did you follow the help topic?
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