Geophone

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Item Geophone
Item code
Description
Manufacturer Shell
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-25"NMI" can not be assigned to a declared number type with value -25.
Taxonomy IMG2176
  1. 25. NMI. The only markings are the letters SHELL LB written around the side of the case. Hex fitting at top appears to be an alternate cable entry.

GSH IMG2176.jpg