In a message dated 2008/09/20, jcallen1@........... writes:

> The web site showing the various pendulum configurations is very 
> interesting.  Has anyone experimented with or know of a seismometer based on the 
> Scott-Russel Linkage pendulum reflected in the web site Chris referenced?
> James Allen

Hi James,

       I believe that welded silica glass systems were used for tilt 
measurement / measuring g in Germany back in the 1930s. I am not certain whether they 
were used as seismometers.

       Regards,

       Chris Chapman    
In a me=
ssage dated 2008/09/20, jcallen1@........... writes:



The web site showing the variou=
s pendulum configurations is very interesting.  Has anyone experimented=
 with or know of a seismometer based on the Scott-Russel Linkage pendulum re=
flected in the web site Chris referenced?

James Allen




Hi James,



       I believe that welded silica glass syst=
ems were used for tilt measurement / measuring g in Germany back in the 1930=
s. I am not certain whether they were used as seismometers.



       Regards,



       Chris Chapman