Although the term "cruising timber" may sound peculiar, its function is imperative. Before timber is manufactured, potential harvests must be evaluated through this important process. In this presentation, procedures for measuring timber (i.e., standing tree and log volume) are examined and explained. Measuring devices and tools, such as a diameter tape and a Biltmore stick, are explored with detailed examples of the practical application of each. Formulas for calculating saw timber volume and for calculating pulpwood or cords are also provided.