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    Equipment (2)
    Testing (1)

John Andrew Wagner's Images

Organization: International Society of Arboriculture
Country: United States
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Image Subject Name Scientific Name Description
5375366 risk tree Resistance-recording drill in use.
5375367 risk tree Up close view of a resistance-recording drill against the tree.
5375365 risk tree Resistance-recording drills are an advanced drilling tools that measure the resistance over the distance drilled, which allows for fairly effective decay detection.  However, like all decay detection methods, this equipment still have limitations. 

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