Girth is a

**measurement**of the distance around the trunk of a**tree measured**perpendicular to the axis of the trunk. Use of girth to arrive at an equivalent diameter is an older forestry**measurement**that is still used. In the United States girth is**measured**at a height of 4.5 feet above ground level.In this way, what does Caliper mean for trees?

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**Caliper**” refers to the diameter of the stem of a deciduous**tree**(**trees**that lose their leaves in the fall). The measurement is taken six inches up from the root ball, and sizing starts at 50mm (5cm or 2 inches). Potted**trees**typically have a smaller leaf canopy and very seldom measure larger than 50 mm in**caliper**.How do you measure the girth of a tree?

**Golden Rules**

- Always measure at 1.5m (5 ft) from ground level on the upper side of any slope. If the tree forks or abnorrnaly swells at or below 1.5m, then the smallest measurement below 1.5m should be recorded and the height from ground noted.
- Always make sure the tape is level.
- If possible always use a metric tape.

What does DBH stand for in trees?

Diameter at breast height