These are interesting, but it isn't clear what the natural frequency is.
For earthquake purposes, you would do better to buy one of those =
3-component
4.5 sensors from Larry.

Doug Crice
Geostuff             http://www.georadar.com/geostuff.htm
12996 Somerset Drive                phone 1-530-274-4445
Grass Valley,  CA  95945  USA    fax 1-530-274-4446
=20

-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@............... =
On
Behalf Of BOB BARNS
Sent: Friday, March 12, 2004 7:36 AM
To: psn mail
Subject: ebay auction

MARK PRODUCTS SEISMOGRAPH SENSORS w/ CABLES  Item number: 3803503727
   ends 3/18  appears to be 3 geophones
Bob



__________________________________________________________

Public Seismic Network Mailing List (PSN-L)



__________________________________________________________

Public Seismic Network Mailing List (PSN-L)