This device has revolutionised on site discussions with contractors and clients over the identification of defects in trees and pruning points required to be affected. Especially useful when dealing with veteran and ancient trees where correct pruning placement is vital. I also use mine to investigate cavity depth not only at root collar level and into the stem but by higher up the tree and into the branch work using a colleague to spot the apparent depth and orientation of cavities using field glasses. I also use the laser when giving guided walks so that people can be schooled on observing defects from afar before approaching the tree for closer investigation.
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