TL;DR
A Resistograph test is a micro-drilling inspection in which an arborist drives a 3-millimeter needle into a trunk or limb while the instrument graphs drilling resistance, revealing internal decay, cavities, and cracks that bark conceals. Sound wood traces high resistance; rot and hollows plot as sudden drops.
What it means
A Resistograph test is a micro-drilling inspection in which an arborist drives a 3-millimeter needle into a trunk or limb while the instrument graphs drilling resistance, revealing internal decay, cavities, and cracks that bark conceals. Sound wood traces high resistance; rot and hollows plot as sudden drops. Arborists use the profile, often alongside sonic tomography, to quantify remaining sound wall thickness in risk assessments that decide whether a mature tree stays or goes.
Where it sits in the glossary
Resistograph test is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
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See also
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