Jon,

Very nice.

Can you describe the upper and lower pivots?

Is there advantage to having the coil on the boom rather than the magnet?

Rob

Jón Frímann wrote:
> Hi all
>
> I got a new lehman seismomter build from the old one, that was not
> working. The new one is bit more complex and more adjustable. Now I just
> have to figure out how to get the seconds down to 10 to 20 seconds.
>
> Here are pictures.
>
> http://www.jonfr.com/myndir/v/geology/lehman/p4300001.jpg.html
> http://www.jonfr.com/myndir/v/geology/lehman/p4300002.jpg.html
>
> Regards.
>   
> ------------------------------------------------------------------------
>
>
> Internal Virus Database is out of date.
> Checked by AVG - http://www.avg.com
> Version: 8.0.176 / Virus Database: 270.12.3/2075 - Release Date: 4/22/2009 5:25 PM
>
>   

__________________________________________________________

Public Seismic Network Mailing List (PSN-L)