PSN-L Email List Message
Subject: Re: Question regarding leveling of vertical seismometer
From: ChrisAtUpw@.......
Date: Thu, 3 Apr 2008 14:19:23 EDT
In a message dated 2008/04/03, charles.r.patton@........ writes:
> The only other trick is to put enough weight on the base 
> so that the center-of-mass is within the triangle formed by the fixed 
> point and two screws (or use a long, triangular shaped base where all 
> the parts are within the triangle. 
Hi Charles,
       
       This is not usually done. The base is always flexible to some extent 
and having an offset centre of mass / anisotropic flexure may not be exactly 
helpful. 
       Regards,
       Chris Chapman   
In a me=
ssage dated 2008/04/03, charles.r.patton@........ writes:
The only other trick is to put=20=
enough weight on the base 
so that the center-of-mass is within the triangle formed by the fixed 
point and two screws (or use a long, triangular shaped base where all 
the parts are within the triangle. 
Hi Charles,
       
       This is not usually done. The base is a=
lways flexible to some extent and having an offset centre of mass / anisotro=
pic flexure may not be exactly helpful. 
       Regards,
       Chris Chapman   
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