The ability to measure roundwood quantity and quality, and predict product yields is of great importance to forest industries. However, roundwood metrics is a topic that is often difficult to understand due to counterintuitive trends, inconsistencies and variability in a number of factors. This book provides a comprehensive guide to the various methods by which roundwood and the products of roundwood are measured. It presents and compares many different log scaling methods in terms of procedures and conversion ratios. Other topics covered include grading logs, log manufacturing quality, statistical sampling methods for determining log yard inventories and mill log usage volume. Detailed tables of data are presented for the main commercial timber species of the world.