Angel wrote:

>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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>>>
>>>
>>>      
>>>
>
>  
>
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>>Public Seismic Network Mailing List (PSN-L)
>>    
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>  
>
>>To leave this list email PSN-L-REQUEST@.............. with 
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>>See http://www.seismicnet.com/maillist.html for more information.
>>    
>>
>
>
>
>  
>
Try New Focus Inc. They have 80 pitch leveling screws for less than $20 US.
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