Hello Jim.  the hole is to be drilled on the end of the round stock which is 
about a quarter inch in diameter and I only have a dremel tool.
James Allen

-----Original Message----- 
From: Jim Hannon
Sent: Thursday, April 05, 2012 4:23 AM
To: psnlist@..............
Subject: Re: SPREGNETHER HORIZONAL SEISMOMETER

Is the hole in the end or the side of the brass stock? What sort of
tools do you have for drilling?
Jim Hannon

On 4/4/2012 11:45 PM, JAMES C ALLEN 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

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