Geophone

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Item Geophone
Item code
Description
Manufacturer
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-32"NMI" can not be assigned to a declared number type with value -32.
Taxonomy IMG2183
  1. 32. NMI. '"Donut" housing measures 18" across and center assembly holds two geophones.Number 3 stamped in several places on geophone housing and outer ring. No other markings.

GSH IMG2183.jpg