> 
> Hi gang,
>   Three items on ebay:
> 1.  EG&G exploration seismograph 473114350

I'll bet Doug Crice will be surprised to read that this unit, an
ES-125 designed by him, "uses LSI technology"

> 2.  PS-1 Seismograph 475025972
> 3.  Nimbus Industries Pocket Seis.  474875757

This is also a Doug Crice product. Properly adjusted, the LED
readouts show the time from hammer pulse to first arrival, useful
for some basic refraction surveys.

>   No. 3 is a mystery to me.
> Bob Barns
> __________________________________________________________
> 
> Public Seismic Network Mailing List (PSN-L)
> 
> To leave this list email PSN-L-REQUEST@.............. with 
> the body of the message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
> 


-- 
David Josephson / Josephson Engineering / Santa Cruz CA / david@.............
__________________________________________________________

Public Seismic Network Mailing List (PSN-L)