The Doyle Log Rule, a mathematical formula, estimates the lumber yield of a standing tree. A tool employing this formula, whether a physical slide rule or digital application, provides quick estimations based on tree diameter and height. For example, a hardwood log measuring a specific diameter and merchantable height would yield a board foot volume estimate based on this established rule.
This estimation method facilitates rapid timber appraisal, aiding in forestry management and the buying and selling of timber. Developed in the mid-19th century, it has become a standard, though its accuracy is debated and other scales exist. Understanding its limitations is crucial for accurate valuations, particularly with smaller diameter trees where it tends to underestimate yield. This historical context and practical application highlight its ongoing relevance in the modern lumber industry.