I want to plot similar values in the x and y directions and I want the axis
to be the same scale. If it were a map. I would want the map to be the same
scale in both the x and y directions. I could then measure angles or
distances on the graph correctly.

The xy scatter chart seem to allow you to change the scale on the x and y
axis independantly and then automatically stretches the axis (x and y) to fit
the page. the result is that the graph is not true scale in both directions.

Otherwise, I need to use another program or autocad to plot my values.