PSN-L Email List Message
Subject: RE: Geophones on ebay
From: John or Jan Lahr JohnJan@........
Date: Mon, 20 Feb 2006 11:19:35 -0800
I'm just using a spring from the hardware store.
At 09:48 AM 2/20/2006, you wrote:
>What are you using for a spring? Is it a special magic "zero length"
>or just something from the hardware store?
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