Nothing ruins a great party faster than food poisoning, which makes thermometers a must-have tool for grilling enthusiasts. Choose a unit with a metal tip that can withstand high temperatures, and make sure the gauge is clear and easy to read [source: Wilson]. Not only can you make sure your food is cooked safely, but you'll also be able to cook steaks to exactly the right temperature to please your guests.
To keep temperature readings from being affected by the heat of the grill, consider using a metal probe connected to a digital thermometer placed nearby [source: Rodgers]. No matter which type of thermometer you choose, be sure to check it often as you grill to avoid overcooking.