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Diameter at breast height (DBH) <br />• Breast height: Standardized point on the trunk, 4.5 <br />feet from its base. <br />• To measure DBH, a diameter tape (D-Tape) can be <br />used. Otherwise the measurement can be taken with <br />a standard measuring tape and converted to <br />diameter by dividing by pi (3.14). <br />• To measure a tree, wrap the D-tape completely and <br />tightly around the tree at your breast height and <br />record the number where the zero meets the tape, <br />again. <br />• Take care to record the distance on the D-Tape that <br />displays the diameter distance and to record in <br />proper units (inches). <br />