Dear sir/madam
Hi
I'm sending this mail from University of Tehran Institute of Geophysics.
we working on some old analog seismographs was recorded by Hiller
instrument type Stuttgart around 60s. we trying to digitize them but
unfortunately we don't have the instrument response of this seismograph.
I was wondering if you have the instrument response or know any
institute or university can help us?
Best Regards
Hoseein.