This Page is currently under development. HOWEVER, if you are interested in what I am currently building, visit:

This seismometer was designed by Sean Thomas Morrissey, and is currently being extensively discussed on the PSN (public seismic network) at:

As my version of the STM-8 seismograph develops, details and photos will appear on the page, and announced on the PSN mail list.

NEWS! Construction Started

A decision was made to use a mainframe disk drive magnet for my version of the STM Seismograph.

Below are photos of machining and modified magnet frame before assembly.


Machining operation of magnet plate.

Magnet assembly before being reassembled.


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Last update: 29 January 2004 Copyright RJA 1997 - 2004