If I have understood you correctly, all you need to do is click on the "?" icon on the far right hand side where you find the ruler etc, then click on the ruler and you should have a protractor attached to the end of the ruler.
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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