Hi gang,
  
  A portable drum seis, looks like it uses a soot-covered drum
Sprengnether MEQ 800 Portable Seismograph 
Item number: 2544772773 
ends Jul. 17
Four of these avail.
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Sprengnether DR100 Portable Seismograph
Item number: 2544969439 
ends Jul 19
2 avail.
this is digital
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Bob Barns
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