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Convert your stride to feet or use a tape measure for better accuracy if no tape is available use your predetermined step, pace or stride distance. To calibrate your step walk normally over a known distance (say 50 or 100 feet) convert the number of paces to feet and remember the figure.

Divide the number of paces into the distance to get your stride length, for example 50 steps in 100 feet equal a stride of 2 feet. 45 steps is equal to a 2.2 feet stride, 40 steps equals 2.5 feet stride and so forth

When pacing off the widest and narrowest drip lines keep track of the number of steps or paces and then multiply by the number of feet in your stride.

The drip line is the area defined by the outermost circumference of the tree’s, crown, or limb spread, this is also known as the canopy, and is where most of the trees water drips to the ground. Two measurements of the crown/spread are taken and recorded in feet. One is the widest drip line and the second is the narrowest drip line, these two measurements are usually at right angles to one another.

Calculate the average of the two crown spread measurements using this formula: (wide spread + narrow spread in feet)/4. When divided by four this quarter or one-fourth of the average crown spread is used in the scoring of significant trees.