To change the scale of the map, follow these steps:
- Select Map in the Contents window.
- In the Properties window, click the Scale tab.
- Specify the Map units per in. or Length (page units) of the X Scale and/or the Y Scale.
- *Note* If you do not want a proportional map (i.e. you do not want all XY(Z) scales changing together), uncheck the box next to Proportional XY scaling.
If you did stretch the map so that the map scale bar is incorrect or the axis labels are stretched, you can "undo" the stretching by selecting the map, clicking Home | Selection | Transform, setting the X Scale and Y Scale both to 1, and clicking OK.
Updated September 10, 2018