There are 4 Sprengnether MEQ 800 portable seismographs on Ebay with a current bid level of $99.99 and 1 day and 17 hours left. James Allen There are 4 Sprengnether MEQ 800 portable seismographs= on Ebay with a current bid level of $99.99 and 1 day and 17 hours left.&nbs= p;
James Allen