Why the dual lasers of infrared thermometer are used?

Typically, the infrared thermometer makes laser point as an indication of the measured range. The principle of infrared thermometer is the average temperature within the measured circle, if there are multiple temperature points within the circle or the measured circle exceeds the measured object, the measured temperature may be inaccurate, in such case, if infrared thermometer with dual lasers is used, the range of the measured circle can be obtained accurately, to prevent over range of measured temperature, inaccurate temperature, and other issues.