PSN-L Email List Message
Subject: RE: Fwd: SPRENGNETHER 5000 HORIZONAL LONG PERIOD SEISMOMETER
From: "Meredith Lamb" meredithlamb@.............
Date: Sun, 11 Apr 2004 13:57:10 -0600
Highly doubt a spare will be found due to the age of the instrument.....it
discontinued many years ago....even though it a very reliable and highly
I think its a piece one can either carefully homebrew or have a machine
make. I think the part can be made from 1/2" X 1/2" X ~1.75" length
found in hardware stores. Its sold as square rods about 1 foot long.
"IF", you try this,
I'd take along a file to make sure the keystock is metal workable (the iron
can be filed);
some keystock is heat treated and is so hardened it might not be workable.
have to be a exact match of the original to function. After drilling the
wire hole; I'd
install two setscrews on another opposite side, to hold the wire from
boom "prong" holes are probably deep enough to where its about 2/3rds
thickness for stability. With your boom prongs, you can measure their
from the centered wire hole center. Making this part is probably the only
Take care, Meredith
> [Original Message]
> From: Larry Cochrane
> Date: 4/10/2004 11:43:38 PM
> Subject: Fwd: SPRENGNETHER 5000 HORIZONAL LONG PERIOD SEISMOMETER
> Hi everyone,
> I was asked by Jim Allen to forward the following message to the list. He
> uses AOL so he's not on the PSN-L list any more. -Larry
> I just received a Spregnether 5000 long period horizontal seismometer
> similar to the ones on Meredith Lamb's website. However, it is missing
> lower far rear piece that clamps the pivot wire. Its the piece that
> just ahead of the frame (approximately 2+ inches long). If anyone has
> or know a source for parts for this unit I would appreciate hearing from
> them so I can get the unit working.
> If anyone can help, please respond directly to my email: radiotel@.......
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