A professional who grades logs in sorting yard, millpond, or log deck according to industry or company standards. Respnsibilities include:

• Measures diameter and length of log, using scale stick, steel tape, or other measuring aid, and determines total volume, using conversion table.
• Jabs log with metal end of scale stick and inspects log to ascertain conditions or defects, such as sound or water-soaked wood, splits, broken ends, rotten areas, twists, and curves.
• Evaluates log's characteristics and determines grade according to established criteria.
• Paints identification mark of specified color on log to identify grade and species, using paint spray can, or calls out grade to log marker.
• Estimates and deducts volume of waste wood from total volume, and records volume by grade in tally book.