Jan,

  you'll get me all teary eyed  ;)

   I so miss my old paper drum recorder that I had in New
Zealand.   It was far to 

big to ship to australia  :(

  Watching the ink pen trace out on the paper was indeed mesmerizing
I used to 

just sit there for many minutes at a time some times just watching the
micro 

seisms and other general man-made noise and then periodically I would be
around

 when the alarm went off and the pen really started swinging!

 .... those were the days  ;)

Had a drum recorder first  then later on it ran concurrently with
the digital system

till I left NZ.


take care

Dave Nelson

Sydney


At 09:41 PM 7/3/2008 -0700, you wrote:

Yep... we're simply
visually monitoring earth movements on a drum recorder, including but not
limited to earthquakes.

I have a four foot long drum recorder at Gilroy Gardens Theme Park here
in Gilroy CA,  and people from all around come just to see what
earthquakes look like.  They are amazed we can actually see ocean
activity 15 miles away and are mesmerized watching the pen
movement.  


SNIP


Jan in Gilroy
CA