(Best Harvest) The Best Harvest Moisture Tester accurately measures the moisture content within crops and other materials, including corn, wheat, oats, hay, silage, herbs, rice, cotton and wood chips. Includes variable-temperature evaporation drying unit, allowing you to adjust and monitor the level of heat ventilation, specimen container, digital scale and measuring bowl. Measures a range of 0-80% moisture content within 0.1% accuracy. Uses 110 volt power or two AA batteries. One year warranty.