Hello RADIOTEL,

Saturday, October 09, 1999, 4:14:51 PM, you wrote:

Rac> Has anyone heard of the "Zollner" seismograph or horizonal pendulum
Rac> seismograph utilizing the Zollner suspension. I understand that it solves the
Rac> boom piviot problem by using two wires which are kept in tension.  Therefore,
Rac> there is no boom pivot contact and hence no friction.  Has anyone built one
Rac> of these?  How does it compare to a Lehman seismograph?
Rac> Jim Allen
Rac> Cerritos, Calif.

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Hi,

I made a wire under tension pivot that works very well for me.  see it
at www.barriles.com/gardengate


Warmly,

Angel

angel@............



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