Then we are in agreement that Harrys use of the Patronus Charm in these circumstances falls precisely into the category of exceptional circumstances the clause describes?
'Precisely what I was going to ask,' said Umbridge, pointing at the broken shards of china on the floor that had been Hermione's mug.
'You know,' said Phineas Nigellus, even more loudly than Harry 'this is precisely why I loathed being a teacher!
His Strengthening Solution was not precisely the clear turquoise shade of Hermione's but it was at least blue rather than pink, like Neville's, and he delivered a flask of it to Snape's desk at the end of the lesson with a feeling of mingled defiance and relief.
He nodded; here was a ready-made excuse not to talk to any of the others, which was precisely what he wanted, so when she opened the front door he hurried straight past the troll's-leg umbrella stand, up the stairs and into his and Ron's bedroom.
The ingredients had to be added to the cauldron in precisely the right order and quantities; the mixture had to be stirred exactly the right number of times, firstly in clockwise, then in anti-clockwise directions; the heat of the flames on which it was simmering had to be lowered to exactly the right level for a specific number of minutes before the final ingredient was added.
There are no more uses of "precise" identified with this meaning, but check unspecified meaning below.
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Is it precise enough if I measure to the closest inch?
The detective is talking to all the witnesses to try to determine the precise sequence of events.