Geophone

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Item Geophone
Item code
Description
Manufacturer
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-10"NMI" can not be assigned to a declared number type with value -10.
Taxonomy IMG2161
  1. 10 & #11. NMI. Two units of like construction but different size. #10 has DI8 1208 stamped on bottom next to spike. #11 has similar numbers but they aren't legible.

GSH IMG2161.jpg