PSN-L Email List Message
Subject: Re: instrument design
From: "tchannel" tchannel@............
Date: Sat, 24 Oct 2009 12:32:39 -0600
I do not see this on ebay, could you send me the item #?
tchannel@............
Thanks, Ted
----- Original Message -----
From: "Robert McClure"
To:
Sent: Saturday, October 24, 2009 11:26 AM
Subject: Re: instrument design
> It looks like an inverted pendulum to me, with a spring hinge at the
> bottom.
>
> On 10/24/09, meredith lamb wrote:
>> Hi James,
>>
>> Thanks very much for the E-Bay note on the seismometer! The pictures
>> were ~
>> vague, but I think I see the flat metal strip on top. Interesting
>> hanging
>> mass approach. I am "speculating" that it has a photo sensor
>> on the bottom for rough centering purposes? The seller may send a PDF
>> file on such which might
>> also give more overall insight.
>>
>> Makes me wonder whether a round piano wire that replaces the flat metal
>> strip would work out?
>>
>> Meredith
>>
>> On Fri, Oct 23, 2009 at 8:14 PM, James Allen
>> wrote:
>>
>>> To Meredith and all, there is a Kinemetrics SH1 currently listed on
>>> Ebay
>>> with the case removed so that you can see the mechanism.
>>> Jim Allen
>>>
>>>
>>>
>>>
>>
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