File:Echo equipment.jpg

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Echo_equipment.jpg ‎(193 × 124 pixels, file size: 7 KB, MIME type: image/jpeg)

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Description
English: The impact echo equipment includes a hammer, receiver, and water soluble coupling gel and was used to locate a steel column concealed behind the granite facing
Date
Source http://www.nps.gov/hps/tps/technotes/PTN40/NYStateCap.htm
Author Dennis Sack
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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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current19:06, 14 April 2010Thumbnail for version as of 19:06, 14 April 2010193 × 124 (7 KB)Preservapedia (talk | contribs){{Information |Description={{en|1=The impact echo equipment includes a hammer, receiver, and water soluble coupling gel and was used to locate a steel column concealed behind the granite facing}} |Source=http://www.nps.gov/hps/tps/technotes/PTN40/NYStateC

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