Geophone

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Item Geophone
Item code
Description
Manufacturer
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-2"NMI" can not be assigned to a declared number type with value -2.
Taxonomy IMG2153
  1. 2. NMI. Complete unit shown at left and inside basic unit at right. On wide end of case is stamped 1028 and on top is stamped 1092, probably part numbers.

GSH IMG2153.jpg