John,

RE: keeping it simple and affordable:

I hope to make it so. So far it is made with bought parts and no more
machining than hand and woodshop tools, but the several prototypes 
are meeting the initial goals of the NSF proposal. 

I am in the final stages of finishing a very comprehensive technical 
report on it, which the University will use to expand their patent 
application, whose main objective is to keep us in control of the
project, so as to keep any major instrument company from grabbing 
the ideas and secreting them away and then charging kilobucks per
copy. The sensor actually uses a modified version of the electronics
built for the leaf-spring vertical (educational) seismometer.

Regards,
Sean-Thomas
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