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 the tree structure of questionable integrity. These tools are often used where a tree poses a high risk to property and people and where managing tree health is a priority.
- Resistograph: A fine drill that measures the density of the timber by graphing the timber’s resistance to drill bit.
- PICUS Tomograph: An ultrasound that shows an image of the tree structure at the point of testing
- Ground Penetrating Radar: Provides a three-dimensional image of the trees root structure
- Arbor Check: measures the chlorophyll levels in the leaves and provides a vitality measure.