Solved! Go to Solution.
Do you mean esri.geometry.getScale?
esri.geometry.getScale(MAP_OBJECT) works, which is not a map object method, yet the api ref says it is.
Right under getExtent().
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The ref for getScale() is under "esri.geometry Namespace Methods". It's been around since v1.4. I suspect it was the proper place for it back when the map object was quite a bit simpler than it is now. Never stop learning, right?