PSN-L Email List Message
Subject: Re: SPREGNETHER HORIZONAL SEISMOMETER
From: "JAMES C ALLEN" jcallen1@...........
Date: Fri, 06 Apr 2012 21:46:15 -0700
Hello George. I really appreciate your offer to make me a hinge. However,
I mailed the stock and drawings to Jim Hannon this morning who is making one
for me. I hope I can count on your assistance in the future since I know I
will be needing it. Again, I really appreciate your offer and kindness.
Jim Allen
-----Original Message-----
From: George Bush
Sent: Friday, April 06, 2012 9:24 AM
To: jcallen1@........... ; psnlist@..............
Subject: Re: SPREGNETHER HORIZONAL SEISMOMETER
James-
I may be able to help if you can't find a lower hinge and have to
make one. My hobbies are PSN, model railroads, and amateur machine
shops. I have a precision mill, drill press and lathe and would be
glad to try to make you a hinge.
Please send me a drawing or picture, or even send me the old part so
I can see what you need and it's dimensions and I will try to make
something for your instrument.
George
At 09:45 PM 4/4/2012, you wrote:
>I know that this is a long shot, but does anyone have parts for an old
>Spregnether horizontal seismometer? Specifically the lower wire hinge.
>The piece is a short wire with a round brass fitting at each end. I tried
>to make it myself using piano wire and round brass stock. But drilling the
>round brass stock to insert the wire into has been fraught with failure
>thus far since the very small drill bits I purchased at the hobby shop keep
>breaking, Also, any advice on drilling an approximately .030 diameter hole
>in round brass stock would also be appreciated. Do machine shops do this
>kind of work?
>James Allen
>
George
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