A log scaler examines cut timber in a log yard. In this career, your duties focus on assessing the wood to estimate the amount of usable lumber in each piece. You evaluate the quality or the grade of the wood and measure logs to find their dimensions. Your responsibilities include noting imperfections and defects in the wood and applying this information to your calculations. You also provide information about tree species. A log scaler usually works for a timber company. Independent log scalers can also assess timber products to ensure a fair price at market.