PSN-L Email List Message

Subject: good leveling screw source
From: Angel sismos@..............
Date: Mon, 17 Oct 2005 07:03:10 -0500


Hello,

I have spent a good hour looking on the web for some nice leveling
screws with no luck.  Does anyone on the list have a source.

Something with a high thread count and a point so the thing does not
walk when you turn it.

Here are some pictures of my new vault.  Everything is connected to my
house with TCP/IP.

www.volcanbaru.com/nelson/outside.JPG
www.volcanbaru.com/nelson/vault2.JPG

Thanks,

Angel

Saturday, October 15, 2005, 2:53:21 PM, you wrote:

> Hi Rene,

> I can answer your first questions. The PSN 3/4 file format is not proprietary, so it
> can be used by any application and WinQuake is not open-sourced.

> Regards,
> Larry Cochrane
> Redwood City, PSN

>> Hi list,
>> 
>> 2 Questions:
>>    I'd like to know how 'official' the PSN file format is. It is well
>> described, and i'd like to let my measurement equipment also output a
>> PSN file. However, i only seen a few applications that use it (winquake
>> etc), which is a (semi?) commercial/paid application. However, the file
>> format seems standard in the PSN network, so i like to comply to that
>> standard. Is PSN3/4 file format a propierity standard or can it also
>> freely be used by other aplications, and/or is it considered the 
>> winquake applications to be open-sourced?
>> 
>>   Is there any documentation on using capacitive measurements instead of
>> the coil based ones? So far i saw all lehman-typed instruments equiped
>> with a pickup coil. With my testing equipment i used two capacitor 
>> plates, each about 30cm2 large, at about 3-5 mm of eachother. On that is
>> an variabele oscillator attached, with pulse counting i determinate
>> position of the arm with reasonable success but no hard data on 
>> resolution. I am wondering if there ary any known disadvantages of such
>> setup, i think it is suitable to build a Shackleford-Gundersen type this
>> way as well.
>> 
>> kind regards,
>> 
>> rene
>> 
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-- 
Best regards,
 Angel

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