DBH Estimation Rules

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1. Each member club may enter one contestant.
2. There will be a total of ten (10) trees (5 conifers and 5 hardwoods) flagged as the contest is being given, to be estimated by each contestant. Estimates will be made to the nearest one-tenth (1/10) of an inch. All estimates will be ocular. No use of any scaling device, including appendages (hands, thumbs, etc.) will be allowed.
3. The true DBH, measured by diameter tape, of each of the ten trees will be recorded by the judges before the start of the contest.
4. The winner of the contest will be the contestant whose list of estimated diameters has the least total of individual deviations from the true diameters.
5. Contestants must remain at least ten (10) feet from the trees being estimated at all times.
6. In case of a tie in first, second or third place, additional trees will be given until the tie is broken. The losing contestant in the tie-breaker will automatically gain the next lower position.

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