GeoPhone.JPG


Summary

Description
English: This image is of a geophone , used to detect vibrations, specifically in the earth. It is made by Geosource Inc. It is a Model MD-79, Made in USA, 8Hz, 335 ohm. It is listed with a "MODIFIED" date of 12-9-82. This image was taken by Andrew Baker on August 11th, 2009. IFU request , Image released by author into the public domain [1]
Date
Source http://www.kontraptionist.com/files/geophone.JPG
Author Andrew Baker

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain . This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose , without any conditions, unless such conditions are required by law.

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11 August 2009