File:Crack monitor.jpg

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Crack_monitor.jpg (300 × 209 pixels, file size: 27 KB, MIME type: image/jpeg)

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Description
English: A crack monitor can be used to determine whether existing cracks in the historic building are stable or still experiencing movement. Compared with measurements taken during the monitoring phase, such information can help determine if movement resulted from adjacent work
Date Unknown date
Source http://www.nps.gov/hps/tps/technotes/PTN42/doc.htm
Author Avongard Products U.S.A., Ltd
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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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current15:30, 20 April 2010Thumbnail for version as of 15:30, 20 April 2010300 × 209 (27 KB)Preservapedia (talk | contribs){{Information |Description={{en|1=A crack monitor can be used to determine whether existing cracks in the historic building are stable or still experiencing movement. Compared with measurements taken during the monitoring phase, such information can help

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