Difference between revisions of "Geophone"

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(VM 7.23.20)
(VM 7.23.20)
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{{Virtual Museum table
 
{{Virtual Museum table
|Taxonomy=IMG2170
+
|Taxonomy=IMG2189
 
|Item=Geophone
 
|Item=Geophone
|Serial number=NMI-19
+
|Serial number=NMI-38
|Manufacturer=Vector
 
 
|Donor=Charlie Klutts
 
|Donor=Charlie Klutts
 
|Location=HGC
 
|Location=HGC
 
}}
 
}}
#19. NMJ. One side of case is stamped D and the opposite side is stamped 37644. Molded packing gland is marked Vector. Connector is carved from two pieces of fiber board, screwed together, with spring contact inserts.
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#38. NML No permanent magnets. Two coil windings are mounted on the back side of the basic unit Case is brass with white metal liner. Basic unit, shown at right, is all brass. All components except coil windings are attached to rectangular piece in center which pivots at bottom and causes two vertical bars, behind rectangular piece, to move vertically within the wire wound coils. Case has single number 7 stamped above cutaway area. (Unit, at left, is mislabeled #36
  
[[File:GSH_ IMG2170.jpg|300px]]
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[[File:GSH_ IMG2189.jpg|300px]]

Revision as of 11:01, 23 July 2020

Item Geophone
Item code
Description
Manufacturer
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-38"NMI" can not be assigned to a declared number type with value -38.
Taxonomy IMG2189
  1. 38. NML No permanent magnets. Two coil windings are mounted on the back side of the basic unit Case is brass with white metal liner. Basic unit, shown at right, is all brass. All components except coil windings are attached to rectangular piece in center which pivots at bottom and causes two vertical bars, behind rectangular piece, to move vertically within the wire wound coils. Case has single number 7 stamped above cutaway area. (Unit, at left, is mislabeled #36

GSH IMG2189.jpg