Hi,

Years back some of last gardengate seismographs were made using a wire
under tension for the pivot, long periods were quite easy.  I am looking
to see if I can find some pictures.

Angel

On Sat, 2010-06-05 at 08:50 -0700, Geoffrey wrote:
> Is there some reason no one will use a short
> piece of wire to be the bearing in a Lehman Seismometer ?
> 
> Like, it could be far better than any two seperate pieces
> of metal touching each other ?
> 
> Thanks ahead of time
> geoff
> 
> 
> 
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