Hi Benoit and all,
I constructed that very same seismograph in 1969 and believe that I did det=
ect earthquakes with it. I just didn't recognize the earthquake wave forms =
that we are all so familiar with now. There was no PSN in those days and I =
was on my own. I believe that it could be made into a workable seismograph =
(sensor) even though made of wood. My 14 year old son, shown in one of the =
pictures, is 52 years old now.

See my web page (url below) for pictures.  Click on "MY ANALOG SEISMOGRAPH =
IN 1969" (JUST BELOW THE PICTURE OF THE Shackleford-Gunderson seismograph s=
ensor near the bottom of the page).

SEE MY WEB PAGE AT www.seequake.com

Frank Cooper, Friendswood, Texas, PSN and ATN member. =20

--- On Wed, 3/10/10, K.-Benoit Evans  wrote:

> From: K.-Benoit Evans 
> Subject: Re: Popular Science Seismograph plans (1965)
> To: psn-l@..............
> Date: Wednesday, March 10, 2010, 6:58 AM
> Does anyone have an
> opinion on the Pop Sci seismograph plans from 1965? Could it
> be modernized and be useful today?
> http://www.popsci.com/archive-viewer?id=3DWiYDAAAAMBAJ&pg=3D135&query=3De=
arthquake+detector
>=20
>=20
> Regards,
> Beno=EEt Evans
>=20
>=20
> 
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