A visual assessment is based on experience, knowledge and a subjective but professional appraisal. The use of diagnostic tools allows us to look into the tree, into the soil and roots and collect objective data. These assessments facilitate a full appraisal of the tree where a visual tree assessment has identified tree structure of questionable integrity. These tools are often used where a tree poses a high risk to property and people.
- Resistograph: A fine drill that masures the density of the timber by graphing the timbers resistance to drill bit.
- Picus tomograph: An ultra sound that shows a image of the tree strucutre at the point of testing
- Ground Penetrating Radar: Provides a tree dimentional impage of the trees root strucutre