Just trying to measure the area of a selected polygon (a few km2) but can't find out where the measure symbol is (mentioned in some posts here) or how to get the measure window shown in the manual. How?
The measure tool is in the Attributes Tool Bar. If it isn't visible you can bring it up using View > Toolbars and check the Attributes Toolbar.
The measuring tool icon is a blue rule with a line above it. It has a drop down menu to chose measurement type, Length, Area or Angle.
Hope this helps.