Most industrial IR thermometers are not well-suited to measuring body temperature. Many industrial IR thermometers produce measurements that are accurate to within three or four degrees Fahrenheit, which is acceptable for industrial applications but would not be helpful for determining whether or not a person has a fever. Also, the temperature of a person's forehead is somewhat cooler than their internal body temperature, and clinical IR thermometers are designed to deliver readouts that compensate for this difference, while industrial IR thermometers are not. Check manufacturer's specifications to determine whether an instrument can be used to measure body temperature.