Geophone

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Item Geophone
Item code
Description
Manufacturer
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-27"NMI" can not be assigned to a declared number type with value -27.
Taxonomy IMG2178
  1. 27. NMI. Brass case is solder sealed. White metal cap is press-in and contains molded rubber preform stamped with numbers 155. The numbers 7 62 are stamped on side of case at bottom - possibly a date stamp. Unit was originally enclosed over top and partially down the side with orange molded rubber, which disintegrated during the cleanup process.

GSH IMG2178.jpg