A tree caliper is a special caliper to measure the diameter at breast height of a tree. When used in forestry, the term "caliper" can refer to the diameter of a tree's trunk at breast height itself. The measurement is generally made at 4.5 feet (1.4 m) to 5 feet (1.5 m) above the soil.

"Caliper measurements on young trees are taken 6 inches above the soil. Once a tree's caliper exceeds 4 inches, the tree is measured at a height of 12 inches." [1]

There are a considerable number of designs of the tool.[2]

References

  1. ^ Wright, Jacob J. "What Does Caliper Mean in Landscaping?". Hunker. Retrieved November 9, 2020. Archived August 15, 2020, at the Wayback Machine.
  2. ^  "Вилка, измерительный инструмент" . Brockhaus and Efron Encyclopedic Dictionary (in Russian). 1906.

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Forestry tools and equipment
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