Whether you are in forestry, environmental science, or arboriculture, accuracy is imperative. Lufkin executive diameter tapes are for measuring diameters of trees, pipe, and cable. They have a polished chrome case, and the zero falls in the same place on each side of the blade. To convert from diameter to circumference, turn the blade.
The metric tape is two meters and measures up to 61 cm diameter. The imperial tape is six feet and measures up to 22 inches diameter.