Difference between revisions of "Geophone"

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(VM 7.23.20)
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{{Virtual Museum table
 
{{Virtual Museum table
|Taxonomy=IMG2179
+
|Taxonomy=IMG2157
 
|Item=Geophone
 
|Item=Geophone
|Serial number=NMI-28
+
|Serial number=NMI-6
|Manufacturer=Walker Hall Sears
 
 
|Donor=Charlie Klutts
 
|Donor=Charlie Klutts
 
|Location=HGC
 
|Location=HGC
 
}}
 
}}
#28, #29 & #30. Same basic units except that #30 is brass. Each top is stamped with the HALL-SEARS logo (Chevron around the letters H/S). Caps contain molded rubber packing glands with integral press-on contacts - no solder contacts. Each unit is stamped around the side in the same manner; 404409 20 U9 (#28), 134326 18 T7 (#29) with only 18-2 visible beneath the brass cap on #30. #29 has a bright red anodized cap and has been painted yellow.
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#6
  
[[File:GSH_ IMG2179.jpg|300px]]
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[[File:GSH_ IMG2157.jpg|300px]]

Revision as of 10:34, 23 July 2020

Item Geophone
Item code
Description
Manufacturer
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-6"NMI" can not be assigned to a declared number type with value -6.
Taxonomy IMG2157
  1. 6

GSH IMG2157.jpg