If you show a map without specifying a SpatialReference, how do you know what the distance is ?
In a simple application, I read the mapView's mapScale and plot it on the map in a textbox (like 1/mapScale).
I would assume that with a mapScale of 10000, 1 cm on the screen represents 10000 cm = 100 m in reality, so a street of 800 m would be shown 8 cm long ?
However, on my application it's nearly double that size (about 16 cm).
How can I know the exact distance of an object on the map, using mapScale() ?