Hi gang,
  I don't know anything about this but it looks attractive.  Note that
it has to be picked up--he will not ship.
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Seismograph                                                                            
Item number: 2560793610  auction ends Oct.2

Made by Texas Instuments in the 1960's or 70's? Model S-36.I have a
specifications sheet for it too.I have not tested this
  because I have no idea how it works! My late Father had a number of
different Seismographs he played with so I presume it
  works but can NOT gueretee it.It also quit heavy for it's size.I have
another one too but it's REALLY HEAVY & BIG and
  will not ship it that's why I've never listed it. If you have any
questions Please email them to me. I expect payment within 10
  days of auction closing and to ship within 10 of payment receipt
PLEASE READ THIS>>I accept US Post Office money
  orders and PayPal [www.paypal.com] ONLY
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