Difference between revisions of "Geophone"

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{{Virtual Museum table
 
{{Virtual Museum table
|Taxonomy=IMG2165
+
|Taxonomy=IMG2179
 
|Item=Geophone
 
|Item=Geophone
|Serial number=NMI-14
+
|Serial number=NMI-28
 +
|Manufacturer=Walker Hall Sears
 
|Donor=Charlie Klutts
 
|Donor=Charlie Klutts
 
|Location=HGC
 
|Location=HGC
 
}}
 
}}
#14. NMI. All brass case. Numbers 8872 stamped on side. Numbers stamped on opposite side but stamped over. Top part of case had been painted orange color for visibility during recovery.
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#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.
  
[[File:GSH_ IMG2165.jpg|300px]]
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[[File:GSH_ IMG2179.jpg|300px]]

Revision as of 10:33, 23 July 2020

Item Geophone
Item code
Description
Manufacturer Walker Hall Sears
Circa
Model
Donor Charlie Klutts
Location HGC
Serial number NMI-28"NMI" can not be assigned to a declared number type with value -28.
Taxonomy IMG2179
  1. 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.

GSH IMG2179.jpg