Infrared Thermometer Use: Angle of Measurement

For the most accurate reading always try to hold the lens or opening of your infrared thermometer directly perpendicular to the surface being measured. In that way the border of the surface area being measured by your thermometer will be a tight circle.

When you hold your infrared thermometer at an angle relative to the surface being measured, the area in your reading will be elliptical and thus harder to control.