PSN-L Email List Message

Subject: Re: ebay sensor
From: The Lahrs johnjan@........
Date: Tue, 24 Oct 2000 18:41:50 -0600


The SMA1 is a strong motion unit that records on photographic film.
It is set to trigger, usually at about .05 g, and then record for a set
duration.  Digital technology has made these instruments obsolete.

John
At 06:24 PM 10/24/00 , you wrote:
>Hi gang,
>   ebay # 472860456 is a Kinemetrics SMA-1.  Is this a seismograph?
>The auction ends 11/25 about 18:00 PDT.
>Bob Barns

John C. Lahr
1925 Foothills Road
Golden, CO 80402
(303) 215-9913
john@........
http://lahr.org/john-jan/science.html
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Larry Cochrane <cochrane@..............>