- THE RESISTOGRAPH DRILL
Resistographs are handy testing and measuring devices, working upon the principle of measuring the resistance while drilling and delivering detailed information about the inside of tree trunks and roots. The devices are precise and fast, while causing minimal injury to the tree. The use of a Resistograph can prevent accidents and helps to save valuable tree populations.
Resistographs detect: Wood decay, rot in various stages, hollow areas and cracks, annual ring structures, growth tendency according to the width of the annual ring.
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Resistograph being demonstrated at a trade show.
The Resistograph has been developed for the following tasks:
 | Examination of trees. |
| Tree inspections to ensure traffic safety. |
| Assessments to tree damage in forests. |
| Testing of wood playground equipment. |
| Examination of wood poles. |
| Testing of wooden bridges. |
There are several instruments available. Contact us and we will send you a video
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Contact us for more information and to receive a video of the Resistograph in use.