The Broil King Instant Read Thermometer is the safest way to check the internal temperature of your grills, whether you're grilling on gas or charcoal grills. With this handy pocket thermometer, you can quickly and accurately check the temperature of your roast, so you don't have to keep the lid open for a long time. Simply stick the thermometer into your roast (in the thickest part, away from the bones) and the temperature will appear on the screen in °C or °F.