MM>> So - outside of the solutions above,  any novel methods ?

 > Here's another one, that might come to one sitting in Church
 > observing a chandelier, no doubt during a rather boring
 > sermon:

 > (Do you know what it is yet?  If you know your history of
 > physics that should be hint enough.  ;-)

Ah, yes of course. Get a rope and lower the barometer to the street from
above as in one of the previous solutions. But instead of measuring the
length of the rope, bring it into swing and measure the frequency.

Cheers, Michiel

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