At 03:49 PM 5/19/03 -0700, you wrote:

>This tiltometer sounds very much like the one described in one of 
>Scientific American's old "Amatuer Scientist" columns...

Oops, the article is in Nov, 1973 Scientific American...

The instrument described is only two feet, center to cener, and is 
described as being used to monitor earth tilt due to a volcano.

It's also used as as siesmometer, and is said to be sensitive enough
to monitor the earth tide.

The electronics are a bit dated, but would work as described.

Daryl

 
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