I've posted a picture of Erich's drum recorder.  It's a good-looking, 
desk-top model.
See:  http://jclahr.com/science/stuff/
This would be great as a museum display, showing how seismology used 
to record data prior to the digital age.

Cheers,
John

>To: 
>Subject: Free Drum Recorder Available
>Date: Tue, 20 Jun 2006 08:11:46 -0700
>
>
>Folks,
>
>I have a drum recorder with servo pen driver I'm willing to give to 
>anyone who will come pick it
>up in Murieta, California. It weighs about 80 pounds. The servo pen 
>driver is from an HP strip
>chart recorder and all caps have been replaced, it works very well.
>
>Send me an email off-list for a description and photo. Can't post a 
>photo to this list.
>
>Erich Kern
>
>efkern@earthlink,net
>
>
>
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