G'morning Paul, 

 PR> So what are the other 49?
 PQ> Dunno about the intervening 48, but surely the last (#1)
 PQ> has got to be: use the barometer to hold the top edge of
 PQ> the building plan as the architects scribblings are
 PQ> deciphered, to discern the actual height.

I liked the one where you barter the barometer for the building 
height in a business deal with the caretaker or superintendent...

Perhaps there ain't a "50 ways list" ?

:-)
  
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