08 Jan 06 21:55, DAVID WILLIAMS wrote to Miles Maxted:

 DW> -> An extremely well-endowed barometer, in other words !

 DW> It must have replied to some of those ads that offer great extension.
 DW> Maybe it wants to work as a porn star.

 DW> -> Yes - use of the barometer is a must...

 DW> I wondered if the mercury in the barometer might be used as a mirror
 DW> in some sort of optical triangulating device. I can visualize such a
 DW> thing, but I don't know how accurate it would be.

There ya go. Lay the barometer on it's side, with the mercury tube visible
from below and use an optical measuring device to measure the distance.
Then by using the angle shown on the measuring device, trig the height of
the building.


Roy
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